20-06-2019
Mathematics

contestada

Which expression is the factorization of x^2+10+21

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20-06-2019

Answer:

x^2 - 10x + 21 = (x - 3)(x - 7)

Step-by-step explanation:

x^2 - 10x + 21

Find the two numbers that when added equal - 10, and when multiplied equal 21.

The number - 3 and -7 meet the criteria.

x^2 - 10x + 21 = (x - 3)(x - 7)

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