Question

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

a.(x + 5)(x − 1)
b.(x + 5)(x + 1)
c.(x − 5)(x − 1)
d.(x − 5)(x + 1)

Answer 1

The answer is d. (x-5)(x+1)

Answer 2

Hello There!

Let's expand all the options to see which one is correct:

(x + 5)(x - 1)
==>
`x^(2) + 4x - 5`

(x +5)(x+1)
==>
`x^(2) + 6x + 5`

(x - 5)(x - 1)
==>
`x^(2) - 6x + 5`

(x - 5)(x + 1)
==>
`x^(2) - 4x - 5`

Therefore, it is option D.

Hope This Helps You!
Good Luck :)

- Hannah ❤