Hi everyone, this is my first post and I don't really know how things work around here, but I'll ask my question.

I'm in Algebra 2 and I'm having trouble finding how to do this particular problem in my textbook:

Subtract, simplify, and note domain exclusion:

(6/x^2-9)-(1/x-3)

I know that I should probably factor the denominator of 6/x^2-9 because it's a difference of squares, but I have no idea how to make them both have like denominators in order to subtract! I also think that the exclusion is -3 but I'm not completely sure of that either.

I know for a fact that the domain is (-∞, 3)∪(3,∞)

Help as soon as possible would be greatly appreciated! (my test corrections are actually due tomorrow )

-Lissy