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How to factorize this: x^2-4x-5
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4 votes
How to factorize this:
x^2-4x-5

User Henrik Erlandsson
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1 Answer

4 votes
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)
User Umbriel
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