Question

Factorise
1) x^3-2x^2-x+2
options
I) (x-2) (x-1) (x+1)
ll) (x+1) (x-3) (x+1)​

Answer 1

Answer:

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

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

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

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

I) is the right answer