Question

[10.01] Which factor do you cancel from the numerator and denominator to simplify x squared plus 4 times x minus 5 all over x squared minus 25.?

x + 5

x - 4

x - 5

x + 4

Answer 1

x^2 + 4x - 5/(x^2 - 25)

Answer 2

This can also be written as x^2 + 4x - 5 / (x-5)(x+5)

Which can also be written as (x + 5)(x-1) / (x-5)(x+5)

Answer 3

So its C

Answer 4

No it would actually not be.
What they are asking is what term would you cancel out.
The only way you could cancel out a term is if there was an equal amount on the bottom.
Does both the numerator and donominator have the same term that can be crossed out?

Answer 5

yes

Answer 6

So its A Because they got cross out

Answer 7

Correct :)

Answer 8

yes!!!!!!!