Question

Дам 40 Баллов!! 1)4y(y+3)-(y+4)^2=
2)(y+10)(y-2)-4y(2-3y) =
3)(y-4)(y+4)-(y-3)^2=

Answer 1

1) =4y²+12y-(y²+8y+16)=4y²+12y-y²-8y-16=3y²+4y-16
2)=y²-2y+10y-8y+12y²=13y²
3)=y²+4y-4y-16-(y²-6y+9)=y²-16-y²+6y-9=6y-25

Answer 2

1)=4у^2+12у-у^2-8у-16=3у^2+3у-16

2)=у^2-2у+10у-20-8у+12у^2=13у^2-20

3)=у^2-16-у^2+6у-9=6у-25