SOLUTION: can I use the product rule for exponents to multiply x7 and y9 and why or why not?

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Question 356777: can I use the product rule for exponents to multiply x7 and y9 and why or why not?

Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
you cannot use the product rule because the base is not the same.
x^7 & y^9
the product rule is
a^m*a^n= a^(m+n)
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m.ananth@hotmail.ca