Решите уравнения (5+2y)(y-3)-2 (y-1)^2=0

Question

Решите уравнения (5+2y)(y-3)-2 (y-1)^2=0

Answer 1

5y-15+2y^2-6y-2(y^2+1-2y)=0, 5y-15+2y^2-6y-2y^2-2+4y=0, 3y-17=0, 3y=17, y= 17/3.