Question

x(x-2)(x+1)=x^2(x-1)
Помогите 

Answer 1

$x(x-2)(x+1)= x^{2} (x-1)\x( x^{2} +x-2x-2)= x^{3} - x^{2} \ x( x^{2} -x-2)= x^{3} - x^{2} \ x^{3} - x^{2} -2x- x^{3} + x^{2} =0 \ -2x=0 \ x=0$