What is the sum of -6 over ab + a^2 over b^2?

Question

What is the sum of -6 over ab + a^2 over b^2?

Answer 1

umm....  -6+a over b^3

Answer 2

umm my dog ate my homework?

Answer 3

wow. that's a hard question. let me go get my calculator.

Answer 4

i got (6*a^2)/b, but that may be wrong.

I multiplied the first fraction by b/b, and the second by a/a, so the denominators were like. i then added, and got (-6*b*a^3)/a*b^2, which simplified to the answer above.

hope this helps