Question

х^2(х+1)-(х+2)(2х-3)=х^2(х-1)

Answer 1

x^3+x^2-(2x^2-3x+4x-6)=x^3-x^2
x^3+x^2-2x^2+3x-4x+6-x^3+x^2=0
-x+6=0
x=-6