SOLUTION: what is x to the seventh power divided by x to the negative second power? The book says the answer is x to the ninth power but how?

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Question 757358: what is x to the seventh power divided by x to the negative second power? The book says the answer is x to the ninth power but how?
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
what is x to the seventh power divided by x to the negative second power? The book says the answer is x to the ninth power but how?
:
x%5E7%2Fx%5E-2
remember you can get rid of the negative exponent by writing the
reciprocal, therefore
x%5E7*x%5E2%2F1 or just x%5E7%2Ax%5E2
add exponents when you multiply
x%5E9