Question

Factorise (i) x³ - 2x² -x+2 (ii) y³ + y² -y - 1​

Answer 1

Answer:

(i) x³ - 2x² -x+2

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

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

(ii) y³ + y² -y - 1

=y^2(y+1)-1(y+1)

=(y^2-1)(y+1)

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