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11 November, 15:33

Witch expression is the factorization of x2+10x+21

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  1. 11 November, 16:02
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    x^2 + x (7+3) + 21

    x^2 + 7x + 3x + 21

    x (x+7) + 3 (x+7)

    (x+7) (x+3)
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