Question

Решите уравнения (3x+1)^2-(3x-1)^2=11x+1.2 (5+2y)(y-3)-2(y-1)^2=0

Answer 1

1)
9x²+6x+1-9x²+6x-1=11x+1.2
12x-11x=1.2
x=1.2
2)
5y-15+2y²-6y-2y²+4y-2=0
3y=17
y=17÷3=5 2/3