Question

Factorise x^3-2x^2-x+2​

Answer 1

Answer:

x^3-2x^2-x+2

=x^2(x-2)-1(x-2)

=(x-2) (x^2-1)

=(x-2){(x)^2-(1)^1}

=(x-2)(x+1)(x-1)