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15 July, 01:09

Factorise x³+13x³+32x+20

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  1. 15 July, 02:46
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    Step-by-step explanation:

    By inspection (after fixing the typo), x = - 1 is a root, so factoring out (x+1), we are left with

    (x+1) (x^2+12x+20)

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