Question

(x^2-9)/(x^3+x^2-9x-9)

Answer 1

(x^3+x^2-9x-9) can be factored :
(x(x^2-9)+(x^2-9)) = (x+1)(x^2-9)

can you do it now ?

Answer 2

Can you rationalize the expression?

Answer 3

nothing much more to do ..
the denominator is (x+1)(x^2-9) as i said ..
now the whole expression is :
(x^2-9)/(x+1)(x^2-9)
which is
1/(x+1)

Answer 4

Thank you!

Answer 5

yw