Question

factorise x³+13x²+32x+20​

Answer 1

Answer:

let p(x) = -2

substituting the value we get

(-2)³ + 13×(-2)² + 32×(-2) + 20

-8 + 52 -64 + 20

-72 +72=0

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therefore the factor is x+2

dividing the equation by x+2 we get

x² + 11x + 10

then by simply factorisation.

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we get the factors

(x+2) , (x+1) , (x+10)