Question

(8-9y)y=-40+(6-3y)(6+3y)

Answer 1

8y-9y(квадрат)=-40+(36-9y квадрат)

8y=-40

y=-5

Answer 2

8y - 9y^2 = -40 + 36 - 9y

8y= -40 +36

8y= -4

y= -1/2