Question

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

Answer 1

Answer:

${ - x}^{3} - x + 2 \\ { - x}^{2} - 2x + x + 2 = 0 \\ - x(x + 2) + 1(x + 2) = 0 \\ (x + 1)(x + 2) = 0 \\ x = - 1 \\ x = - 2$

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Answer 2

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