rewrite the rational expression as an euivalent rational expression with the given demonator?

Question

1. a all over a +3b= blank all over a ^2-9b^2 what is the answer?

Answer 1

(a (a^2 - 9b^2)) / (a + 3b)

(a^3 - 9ab^2)/(a+3b)

a^2 - 3ab is the numerator, so the whole expression is:

(a^2 - 3b)/(a^2 - 9b^2)