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23-08-2017
Mathematics

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Factor of x squared+4x-45

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choixongdong choixongdong

23-08-2017

x^2 + 4x -45

-45 = 9 * (-5)
4 = 9 + (-5)

so
x^2 + 4x - 45 = (x + 9)(x - 5)

answer
(x + 9)(x - 5)

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