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

Question

Решите уравнение

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

Answer 1

8y-9y^2= -40 + 36-9у^2

8у=-40+36

8у=-4

у=-0.5