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22 August, 16:44

Factor completely 2x^3 + 14x^2 + 6x + 42.

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  1. 22 August, 16:45
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    Hello,

    2x^3+14x^2+6x+42=2x^2 (x+7) + 6 (x+7)

    = (x+7) (2x²+6)

    =2 (x+7) (x²+3) in IR.

    or In C 2 (x+7) (x-i√3) (x+i√3)
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