Question

Simplify the expression
x2 - 9
-------------
x2 + 2x - 15

Answer 1

hints:

x^2 - 9 factors to (x-3)(x+3)
x^2+2x-15 factors to (x+5)(x-3)

Answer 2

i feel stupid i still dont get it ;-;

Answer 3

from here you need to cancel out a pair of common terms

Answer 4

So get rid of (x-3) on both?

Answer 5

Correct, they cancel

Answer 6

So now its (x + 3) / (x + 5) ?

Answer 7

correct

Answer 8

Thank you :D

Answer 9

np