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77julia77 [94]
3 years ago
13

What is the factored form of x2 − 4x − 5?

Mathematics
2 answers:
faltersainse [42]3 years ago
6 0
When the coefficient in front of the x^2 term is 1 you can factor a quadratic by finding two numbers such that the sum is the coefficient infront of x and the product is c. So
a+b=-4 and ab=-5 notice that -5 and 1 are solutions since (-5)*1=-5 and 1-5=-4 so you can factor it as (x-5)(x+1).
k0ka [10]3 years ago
4 0
The answer would be D....
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