Question

5. Factorise :
(1) x^3 - 2x^2-x+2
​

Answer 1

Step-by-step explanation:

x³-2x²-x+2

x³-2x²-x=-2

x(x²-2x-1)=-2

x(x²-x-x-1)=-2

x[x(x-1)-1(x-1)]=-2

x[(x-1)(x-1)]=-2

(x-1)(x-1)=-2/x

(x-1)²=-2/x

x²+1-x=-2/x