Решить1) (y-1)^2+ 2y-2 y-3 3y =52) 2x+2 5 x+1 + 10 = x3) 4z^3-z z-2z=0

Question

Решить
1) (y-1)^2+ 2y-2
y-3 3y =5
2) 2x+2 5
x+1 + 10 = x
3) 4z^3-z
z-2z=0

Answer 1

(y-1)^2+ 2y-2=y^2-2y+1+2y-2=y^2-1=(y+1)(y-1)
2x+2 = 5
2x=3
x=3/2
4z^3-z=z(4z^2-z)
z-2z=0
-z=0
z=0