Tìm x biết: x(x - 2) + x - 2 = 0

Tìm x biết:
a) x(x-2)+x-2=0
b) 2/3x( x^2-4) =0
c)(x-3)(x^2+3x+9)+ x(x+2)(2-x)=1
d)(x+2)^2-(x-2)(x+2) =0
e)(x-3)^3 -(x-3)(x^2+3x+9)+ 9(x+1)^2= 15
f)4x^2= 81
g)(x+2)^2 -x+4=0
h)(x+2)^2= (2x-1)^2