Question

factorise x cube + 13 x square + 32 X + 20

Answer 1

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Answer 2

Hope u like my process
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$= > {x}^{3} + 13 {x}^{2} + 32x + 20 \\ \\ = {x}^{3} + 12 {x}^{2} + 20x + {x}^{2} + 12x + 20 \\ \\ = x( {x}^{2} + 12x + 20) +1 ( {x}^{2} + 12x + 20) \\ \\ = (x + 1)( {x}^{2} + 12x + 20) \\ \\ = (x + 1)( {x}^{2} + 10x + 2x + 20) \\ \\ = (x + 1)(x(x + 10) + 2(x + 10)) \\ \\ = (x + 1)(x + 2)(x + 10)$
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