Question

factorise x3+13x2+32x+20​

Answer 1

Step-by-step explanation:

The value of x 3+13x 2+32x+20 is

x 3 +x 2+12x 2 +12x+20x+20=x 2

(x+1)+12x(x+1)+20(x+1)

=(x−1)(x 2 +12x+20)

=(x−1)(x 2 +10x+2x+20)

=(x+1)[x(x+10)+2(x+10)]

=(x+1)(x+2)(x+10)

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