1) (3а-х)*(6а+2х) 2) (3а-6х+ во 2 степени-х+8 - вопрос №13622362832385128443630 от mashapermyakova 06.06.2022 13:08

Question

Алгебра: 1) (3а-х)*(6а+2х) 2) (3а-6х+ во 2 степени-х+8 3) (2а-у)*(3х+у)*(8-5) при х=-1 у=2

mashapermyakova · Answer

1)18a²+6ax-6ax-2x²=18a²-2x²2)3a-6x+2-4a²+x-8=3a-5x-63)(2a-y)*(3x+y)*3=(6ax+2ay-3xy-y²)*3=18ax+6ay-9xy-3y²=-18a+12a+18+12=-6a +30...