Question

Помогите прошу!
-2х2+х=0
7х2+14=0
7y2-14=0
5(2х-3)=х2-2(7,5-5х)
(y-1)2+2y=3(y+1/3)

Answer 1

x=0, x=1/2
 x = -sqrt(2)*%i;x = sqrt(2)*%i;
y=-корень(2), y=корень(2)
x=0
y=0, y=3