SOLUTION: Express as a single fraction: a^-2 + b^-3 1/a^2 + 1/b^3 = 1/a^2+b^3. This is not correct. Can I get help with my work? Thank you.

Question 804095: Express as a single fraction: a^-2 + b^-3
1/a^2 + 1/b^3 = 1/a^2+b^3.
This is not correct. Can I get help with my work?
Thank you.
Found 2 solutions by richwmiller, DrBeeee:
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
1/a^2 + 1/b^3
(a^2+b^3)/(a^2 b^3)
Answer by DrBeeee(684) (Show Source): You can put this solution on YOUR website!
Your first step is correct, but you still have two fractions. You need to add them to get a single fraction.
Given:
(1) which converts to
(2)
Now you can choose for the common denominator of the two fraction in (2) and get, by multiplying by and get
(3) or
(4)
Answer: the single fraction of (4)
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