| Step | Hyp | Ref
| Expression |
| 1 | | plyco.2 |
. . . . 5
 Poly    |
| 2 | | plyf 23954 |
. . . . 5
 Poly 
      |
| 3 | 1, 2 | syl 17 |
. . . 4
       |
| 4 | 3 | ffvelrnda 6359 |
. . 3
 

      |
| 5 | 3 | feqmptd 6249 |
. . 3
         |
| 6 | | plyco.1 |
. . . 4
 Poly    |
| 7 | | eqid 2622 |
. . . . 5
coeff  coeff   |
| 8 | | eqid 2622 |
. . . . 5
deg  deg   |
| 9 | 7, 8 | coeid 23994 |
. . . 4
 Poly 

    deg      coeff             |
| 10 | 6, 9 | syl 17 |
. . 3
      deg      coeff             |
| 11 | | oveq1 6657 |
. . . . 5
                   |
| 12 | 11 | oveq2d 6666 |
. . . 4
       coeff            coeff                |
| 13 | 12 | sumeq2sdv 14435 |
. . 3
         deg      coeff          
   deg      coeff                |
| 14 | 4, 5, 10, 13 | fmptco 6396 |
. 2
        deg      coeff                 |
| 15 | | dgrcl 23989 |
. . . 4
 Poly 
deg    |
| 16 | 6, 15 | syl 17 |
. . 3
 deg    |
| 17 | | oveq2 6658 |
. . . . . . . 8
           |
| 18 | 17 | sumeq1d 14431 |
. . . . . . 7
         coeff                      coeff                |
| 19 | 18 | mpteq2dv 4745 |
. . . . . 6
          coeff                        coeff                 |
| 20 | 19 | eleq1d 2686 |
. . . . 5
           coeff               Poly           coeff               Poly     |
| 21 | 20 | imbi2d 330 |
. . . 4
  
         coeff               Poly  
          coeff               Poly      |
| 22 | | oveq2 6658 |
. . . . . . . 8
           |
| 23 | 22 | sumeq1d 14431 |
. . . . . . 7
         coeff                      coeff                |
| 24 | 23 | mpteq2dv 4745 |
. . . . . 6
          coeff                        coeff                 |
| 25 | 24 | eleq1d 2686 |
. . . . 5
           coeff               Poly           coeff               Poly     |
| 26 | 25 | imbi2d 330 |
. . . 4
  
         coeff               Poly  
          coeff               Poly      |
| 27 | | oveq2 6658 |
. . . . . . . 8
               |
| 28 | 27 | sumeq1d 14431 |
. . . . . . 7
           coeff                        coeff                |
| 29 | 28 | mpteq2dv 4745 |
. . . . . 6
            coeff                          coeff                 |
| 30 | 29 | eleq1d 2686 |
. . . . 5
             coeff               Poly             coeff               Poly     |
| 31 | 30 | imbi2d 330 |
. . . 4
    
         coeff               Poly  
            coeff               Poly      |
| 32 | | oveq2 6658 |
. . . . . . . 8
 deg 
       deg     |
| 33 | 32 | sumeq1d 14431 |
. . . . . . 7
 deg 
        coeff                  deg      coeff                |
| 34 | 33 | mpteq2dv 4745 |
. . . . . 6
 deg 
         coeff                    deg      coeff                 |
| 35 | 34 | eleq1d 2686 |
. . . . 5
 deg 
          coeff               Poly       deg      coeff               Poly     |
| 36 | 35 | imbi2d 330 |
. . . 4
 deg 
           coeff               Poly  
      deg      coeff               Poly      |
| 37 | | 0z 11388 |
. . . . . . . . 9
 |
| 38 | 4 | exp0d 13002 |
. . . . . . . . . . . 12
 

          |
| 39 | 38 | oveq2d 6666 |
. . . . . . . . . . 11
 

  coeff                coeff        |
| 40 | | plybss 23950 |
. . . . . . . . . . . . . . . 16
 Poly 
  |
| 41 | 6, 40 | syl 17 |
. . . . . . . . . . . . . . 15

  |
| 42 | | 0cnd 10033 |
. . . . . . . . . . . . . . . 16
   |
| 43 | 42 | snssd 4340 |
. . . . . . . . . . . . . . 15
     |
| 44 | 41, 43 | unssd 3789 |
. . . . . . . . . . . . . 14
       |
| 45 | 7 | coef 23986 |
. . . . . . . . . . . . . . . 16
 Poly 
coeff            |
| 46 | 6, 45 | syl 17 |
. . . . . . . . . . . . . . 15
 coeff            |
| 47 | | 0nn0 11307 |
. . . . . . . . . . . . . . 15
 |
| 48 | | ffvelrn 6357 |
. . . . . . . . . . . . . . 15
  coeff         
  coeff           |
| 49 | 46, 47, 48 | sylancl 694 |
. . . . . . . . . . . . . 14
  coeff           |
| 50 | 44, 49 | sseldd 3604 |
. . . . . . . . . . . . 13
  coeff       |
| 51 | 50 | adantr 481 |
. . . . . . . . . . . 12
 

 coeff       |
| 52 | 51 | mulid1d 10057 |
. . . . . . . . . . 11
 

  coeff       coeff       |
| 53 | 39, 52 | eqtrd 2656 |
. . . . . . . . . 10
 

  coeff               coeff       |
| 54 | 53, 51 | eqeltrd 2701 |
. . . . . . . . 9
 

  coeff                |
| 55 | | fveq2 6191 |
. . . . . . . . . . 11
  coeff      coeff       |
| 56 | | oveq2 6658 |
. . . . . . . . . . 11
                   |
| 57 | 55, 56 | oveq12d 6668 |
. . . . . . . . . 10
   coeff                coeff                |
| 58 | 57 | fsum1 14476 |
. . . . . . . . 9
    coeff                       coeff                coeff                |
| 59 | 37, 54, 58 | sylancr 695 |
. . . . . . . 8
 

        coeff                coeff                |
| 60 | 59, 53 | eqtrd 2656 |
. . . . . . 7
 

        coeff               coeff       |
| 61 | 60 | mpteq2dva 4744 |
. . . . . 6
          coeff                 coeff        |
| 62 | | fconstmpt 5163 |
. . . . . 6
   coeff         coeff       |
| 63 | 61, 62 | syl6eqr 2674 |
. . . . 5
          coeff                  coeff         |
| 64 | | plyconst 23962 |
. . . . . . 7
       coeff             coeff       Poly        |
| 65 | 44, 49, 64 | syl2anc 693 |
. . . . . 6
    coeff       Poly        |
| 66 | | plyun0 23953 |
. . . . . 6
Poly 
    Poly   |
| 67 | 65, 66 | syl6eleq 2711 |
. . . . 5
    coeff       Poly    |
| 68 | 63, 67 | eqeltrd 2701 |
. . . 4
          coeff               Poly    |
| 69 | | simprr 796 |
. . . . . . . . 9
 
          coeff               Poly             coeff               Poly    |
| 70 | 44 | adantr 481 |
. . . . . . . . . . . . 13
 

      |
| 71 | | peano2nn0 11333 |
. . . . . . . . . . . . . 14

    |
| 72 | | ffvelrn 6357 |
. . . . . . . . . . . . . 14
  coeff              coeff             |
| 73 | 46, 71, 72 | syl2an 494 |
. . . . . . . . . . . . 13
 

 coeff             |
| 74 | | plyconst 23962 |
. . . . . . . . . . . . 13
       coeff               coeff         Poly        |
| 75 | 70, 73, 74 | syl2anc 693 |
. . . . . . . . . . . 12
 

   coeff         Poly        |
| 76 | 75, 66 | syl6eleq 2711 |
. . . . . . . . . . 11
 

   coeff         Poly    |
| 77 | | nn0p1nn 11332 |
. . . . . . . . . . . . 13

    |
| 78 | | oveq2 6658 |
. . . . . . . . . . . . . . . . 17
                   |
| 79 | 78 | mpteq2dv 4745 |
. . . . . . . . . . . . . . . 16
                       |
| 80 | 79 | eleq1d 2686 |
. . . . . . . . . . . . . . 15
            Poly 
          Poly     |
| 81 | 80 | imbi2d 330 |
. . . . . . . . . . . . . 14
  
          Poly  
           Poly      |
| 82 | | oveq2 6658 |
. . . . . . . . . . . . . . . . 17
                   |
| 83 | 82 | mpteq2dv 4745 |
. . . . . . . . . . . . . . . 16
                       |
| 84 | 83 | eleq1d 2686 |
. . . . . . . . . . . . . . 15
            Poly 
          Poly     |
| 85 | 84 | imbi2d 330 |
. . . . . . . . . . . . . 14
  
          Poly  
           Poly      |
| 86 | | oveq2 6658 |
. . . . . . . . . . . . . . . . 17
                       |
| 87 | 86 | mpteq2dv 4745 |
. . . . . . . . . . . . . . . 16
                           |
| 88 | 87 | eleq1d 2686 |
. . . . . . . . . . . . . . 15
              Poly 
            Poly     |
| 89 | 88 | imbi2d 330 |
. . . . . . . . . . . . . 14
    
          Poly  
             Poly      |
| 90 | 4 | exp1d 13003 |
. . . . . . . . . . . . . . . . 17
 

              |
| 91 | 90 | mpteq2dva 4744 |
. . . . . . . . . . . . . . . 16
                   |
| 92 | 91, 5 | eqtr4d 2659 |
. . . . . . . . . . . . . . 15
             |
| 93 | 92, 1 | eqeltrd 2701 |
. . . . . . . . . . . . . 14
           Poly    |
| 94 | | simprr 796 |
. . . . . . . . . . . . . . . . . . 19
 
           Poly              Poly    |
| 95 | 1 | adantr 481 |
. . . . . . . . . . . . . . . . . . 19
 
           Poly   
Poly    |
| 96 | | plyco.3 |
. . . . . . . . . . . . . . . . . . . 20
 

      |
| 97 | 96 | adantlr 751 |
. . . . . . . . . . . . . . . . . . 19
              Poly           |
| 98 | | plyco.4 |
. . . . . . . . . . . . . . . . . . . 20
 

      |
| 99 | 98 | adantlr 751 |
. . . . . . . . . . . . . . . . . . 19
              Poly           |
| 100 | 94, 95, 97, 99 | plymul 23974 |
. . . . . . . . . . . . . . . . . 18
 
           Poly                 Poly    |
| 101 | 100 | expr 643 |
. . . . . . . . . . . . . . . . 17
 

           Poly               Poly     |
| 102 | | cnex 10017 |
. . . . . . . . . . . . . . . . . . . . 21
 |
| 103 | 102 | a1i 11 |
. . . . . . . . . . . . . . . . . . . 20
 

  |
| 104 | | ovexd 6680 |
. . . . . . . . . . . . . . . . . . . 20
               |
| 105 | 4 | adantlr 751 |
. . . . . . . . . . . . . . . . . . . 20
           |
| 106 | | eqidd 2623 |
. . . . . . . . . . . . . . . . . . . 20
 

                      |
| 107 | 5 | adantr 481 |
. . . . . . . . . . . . . . . . . . . 20
 

        |
| 108 | 103, 104,
105, 106, 107 | offval2 6914 |
. . . . . . . . . . . . . . . . . . 19
 

                               |
| 109 | | nnnn0 11299 |
. . . . . . . . . . . . . . . . . . . . . 22
   |
| 110 | 109 | ad2antlr 763 |
. . . . . . . . . . . . . . . . . . . . 21
       |
| 111 | 105, 110 | expp1d 13009 |
. . . . . . . . . . . . . . . . . . . 20
                               |
| 112 | 111 | mpteq2dva 4744 |
. . . . . . . . . . . . . . . . . . 19
 

                              |
| 113 | 108, 112 | eqtr4d 2659 |
. . . . . . . . . . . . . . . . . 18
 

                           |
| 114 | 113 | eleq1d 2686 |
. . . . . . . . . . . . . . . . 17
 

              Poly              Poly     |
| 115 | 101, 114 | sylibd 229 |
. . . . . . . . . . . . . . . 16
 

           Poly              Poly     |
| 116 | 115 | expcom 451 |
. . . . . . . . . . . . . . 15
             Poly 
            Poly      |
| 117 | 116 | a2d 29 |
. . . . . . . . . . . . . 14
  
          Poly                Poly      |
| 118 | 81, 85, 89, 89, 93, 117 | nnind 11038 |
. . . . . . . . . . . . 13
                Poly     |
| 119 | 77, 118 | syl 17 |
. . . . . . . . . . . 12

             Poly     |
| 120 | 119 | impcom 446 |
. . . . . . . . . . 11
 

            Poly    |
| 121 | 96 | adantlr 751 |
. . . . . . . . . . 11
    
 
    |
| 122 | 98 | adantlr 751 |
. . . . . . . . . . 11
    
 
    |
| 123 | 76, 120, 121, 122 | plymul 23974 |
. . . . . . . . . 10
 

    coeff                       Poly    |
| 124 | 123 | adantrr 753 |
. . . . . . . . 9
 
          coeff               Poly        coeff                       Poly    |
| 125 | 96 | adantlr 751 |
. . . . . . . . 9
             coeff               Poly    
 
    |
| 126 | 69, 124, 125 | plyadd 23973 |
. . . . . . . 8
 
          coeff               Poly              coeff                    coeff                        Poly    |
| 127 | 126 | expr 643 |
. . . . . . 7
 

          coeff               Poly            coeff                    coeff                        Poly     |
| 128 | 102 | a1i 11 |
. . . . . . . . . 10
 

  |
| 129 | | sumex 14418 |
. . . . . . . . . . 11
        coeff               |
| 130 | 129 | a1i 11 |
. . . . . . . . . 10
             coeff                |
| 131 | | ovexd 6680 |
. . . . . . . . . 10
       coeff                    |
| 132 | | eqidd 2623 |
. . . . . . . . . 10
 

         coeff                        coeff                 |
| 133 | | fvexd 6203 |
. . . . . . . . . . 11
      coeff         |
| 134 | | ovexd 6680 |
. . . . . . . . . . 11
                 |
| 135 | | fconstmpt 5163 |
. . . . . . . . . . . 12
   coeff           coeff         |
| 136 | 135 | a1i 11 |
. . . . . . . . . . 11
 

   coeff           coeff          |
| 137 | | eqidd 2623 |
. . . . . . . . . . 11
 

                          |
| 138 | 128, 133,
134, 136, 137 | offval2 6914 |
. . . . . . . . . 10
 

    coeff                          coeff                     |
| 139 | 128, 130,
131, 132, 138 | offval2 6914 |
. . . . . . . . 9
 

          coeff                    coeff                                  coeff                coeff                      |
| 140 | | simplr 792 |
. . . . . . . . . . . 12
       |
| 141 | | nn0uz 11722 |
. . . . . . . . . . . 12
     |
| 142 | 140, 141 | syl6eleq 2711 |
. . . . . . . . . . 11
           |
| 143 | 7 | coef3 23988 |
. . . . . . . . . . . . . . 15
 Poly 
coeff        |
| 144 | 6, 143 | syl 17 |
. . . . . . . . . . . . . 14
 coeff        |
| 145 | 144 | ad2antrr 762 |
. . . . . . . . . . . . 13
     coeff        |
| 146 | | elfznn0 12433 |
. . . . . . . . . . . . 13
         |
| 147 | | ffvelrn 6357 |
. . . . . . . . . . . . 13
  coeff        coeff       |
| 148 | 145, 146,
147 | syl2an 494 |
. . . . . . . . . . . 12
   


        coeff       |
| 149 | 4 | adantlr 751 |
. . . . . . . . . . . . 13
           |
| 150 | | expcl 12878 |
. . . . . . . . . . . . 13
     
           |
| 151 | 149, 146,
150 | syl2an 494 |
. . . . . . . . . . . 12
   


                 |
| 152 | 148, 151 | mulcld 10060 |
. . . . . . . . . . 11
   


         coeff                |
| 153 | | fveq2 6191 |
. . . . . . . . . . . 12
    coeff      coeff         |
| 154 | | oveq2 6658 |
. . . . . . . . . . . 12
                       |
| 155 | 153, 154 | oveq12d 6668 |
. . . . . . . . . . 11
     coeff                coeff                    |
| 156 | 142, 152,
155 | fsump1 14487 |
. . . . . . . . . 10
               coeff                       coeff                coeff                     |
| 157 | 156 | mpteq2dva 4744 |
. . . . . . . . 9
 

           coeff                 
       coeff                coeff                      |
| 158 | 139, 157 | eqtr4d 2659 |
. . . . . . . 8
 

          coeff                    coeff                                   coeff                 |
| 159 | 158 | eleq1d 2686 |
. . . . . . 7
 

           coeff                    coeff                        Poly             coeff               Poly     |
| 160 | 127, 159 | sylibd 229 |
. . . . . 6
 

          coeff               Poly             coeff               Poly     |
| 161 | 160 | expcom 451 |
. . . . 5

           coeff               Poly             coeff               Poly      |
| 162 | 161 | a2d 29 |
. . . 4

           coeff               Poly   
           coeff               Poly      |
| 163 | 21, 26, 31, 36, 68, 162 | nn0ind 11472 |
. . 3
 deg        deg      coeff               Poly     |
| 164 | 16, 163 | mpcom 38 |
. 2
      deg      coeff               Poly    |
| 165 | 14, 164 | eqeltrd 2701 |
1
   Poly    |