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25-09-2020
Mathematics

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How to factorize this: [tex]x^2-4x-5[/tex]

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25-09-2020

ax^2 + bx + c
a = 1
b = -4
c = -5
x^2 -4x-5

-5x1 = -5
-5+1 = -4
(factors of c that also add up to b)

ANSWER: (x-5) (x+1)

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