Question

factorise the following x cube + 13 x square + 32 X + 20​

Answer 1

Answer:

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Explanation:

Let p(x) = x3 + 13x2 + 32x + 20

p(-1) = -1 + 13 - 32 + 20 = -33 + 33 = 0

Therefore (x + 1) is a factor of p(x).

On dividing p(x) by (x + 1) we get

p(x) (x + 1) = x2 + 12x + 20