Question

упростите выражение (3-y^2)(y-4)

Answer 1

(3-у^2)*(у-4)

3у-12-у^3+4у^2

-у^3+4у^2+3у-12

Answer 2

(3-y^2)(y-4)=3y-12-3y^3-4y^2=4(3-y^2)-3y(1+y^2)