Question

Решите уравнение:
(2y-3)(3y+1)+2(y-5)(y+5) = 2(1-2y)²+6y.

Answer 1

6y²+2y-9y-3+2y²-50=2(1-4y+4y²)+6y
6y²+2y-9y-3+2y²-50-2+4y-8y²-6y=0
8y²-8y²-9y-55=0
-9y=55
y=-55/9