# How do you find the x intercept of #f(x) = (x^2+9x)/(x^2+3x-4)#?

##### 1 Answer

Feb 3, 2015

The

So at first, you only have to look at the top half of the equation -- when this is

Leaves us with

This can be re-written:

So we have two answers:

Check the answers against the numerator (it may **not** be