28-11-2018
Mathematics

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

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28-11-2018

Answer:

( 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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