Question

Factorise 1.x^3-2x^2-x+2

Answer 1

Answer:

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

Step-by-step explanation:

x³-2x²-x+2

=x²(x-2)-1(x-2)

=(x²-1)(x-2) => (a²-b²)=(a+b)(a-b)

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