(5+2y)(y^2-y+1) ответы: 1) 5y^2+10y-15; 2) 2y^3+9y^2+4y-15; - вопрос №71065015221152101522392415352101 от alina3013 24.10.2020 13:19

Question

Алгебра: (5+2y)(y^2-y+1) ответы: 1) 5y^2+10y-15; 2) 2y^3+9y^2+4y-15; 3) 5y^2+10y+15; 4) 2y^3-9y^2+8y-15.

alina3013 · Answer

(5+2y)(y²-y+1)=5y²-5y+5+2y³-2y²+2y==2y³+3y²-3y+5(5+2y)(y²-y+1)=5(y²-y+1) + 2y(y²-y+1)=5y²-5y+5 +2y³-2y²+2y==2y³+5y²-2y² -5y+2y+5=2y³+3y²-3y+5...