Question

Simplify completely: (5x^2-21x-20)/(5x^2-16x-16)

Answer 1

Please help!

Answer 2

How much longer guys?

Answer 3

factor top and bottom and see if u can cancel
5x^2-21x-20 = (5x )(x )
can you complete this?
you need to numbers whose product is -20 and when one is multiplied by 5 and the other added will give -21

Answer 4

I just need the bottom factorf please.

Answer 5

I know how, it just take me forever.

Answer 6

5x^2-16x-16 = (5x + 4)(x - )

can u fill in the blank

Answer 7

5 times some value + 4 = -16
- thats not too hard

Answer 8

5x + 4 = -16

whats x?

Answer 9

-4=x