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20 February, 19:34

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

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  1. 20 February, 19:45
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    (x + 3) (x + 7)

    Step-by-step explanation:

    You need 2 numbers whose product is + 21 and whose sum is + 10.

    They are + 3 and + 7

    so the factors are (x + 3) (x + 7)
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