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02-08-2017
Mathematics

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What is the factorization of the polynomial below?

x²+7x+10

A. (x+10)(x+2)
B. (x+2)(x+5)
C. (10x+2)(x+5)
D. (x+7)(x+3)

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AwesomeMochi AwesomeMochi

02-08-2017

Answer: B. (x+2)(x+5)

This is because once this expression is FOILed (First, outer, inner, last), it would become x^2+2x+5x+10. Then, after like terms are combined, it would match the starting polynomial which is x^2+7x+10.

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