Question

FACTORISE : -

Q. x^3 - 2x^2 - x + 2..

Any one plz help me ^_^​.

Answer 1

Answer

The answer will be (x-1)(x^2-x-2)

Which will be equal to (x-1)(x-2)(x+1)

First by hit and trial method 0=x^3-2x^2-x+2

We can get that when we put the value of x=1 we get RHS=LHS then after dividing (x-1) by the given equation we will get (x^2-x-2)

After that by factorising (x^2-x-2) we get x^2-2x+x-2

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

(x+1)(x-2)