Question

X
5. Factorise :
(i) x2 – 2x2 - x + 2
(iii) x + 13x2 + 32x + 20
(ii) x3 – 3x2 – 9x - 5
(iv) 2y3 + y2 – 2y - 1​

Answer 1

Step-by-step explanation:

(i) x²-2×2 -x+2

= x²- 4 -x+2

= x²-x-2

(ii) x+13×2 + 32x +20

= 33x + 26+20

= 33x +46

(iii) X³ -3×2 -9x -5

= x³- 9x-11

(iv)2y³ +y²-2y -1

= 2y(y²-1) +(y²-1)

=( y²-1) (2y+1)