Asked by Aria

I have a question about exponents of rational expressions.
I have two answers for one problem. One was written on a university mathlab and the other from a calculator.
(3a^3/2)*(-7a^1/5) = -21a^17/10
(3a^3/2)*(-7a^1/5) = -21^a4/10
Can you tell me which is right?
The first one looks right to me based on the multiplication of fractions.

Answers

Answered by Reiny
the first one is definitely the right one.
when you add the exponents 3/2 + 1/5
you get 17/10
Answered by Aria
Thank you. I don't what to talk in class like I haven't done my homework. I did, but the two answers confused me. The second looked plausible, but I trust a university mathlab a whole lot more.
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