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Output display of exponential function in Mathematica


How can I get Mathematica to display 25(5^h) when I input 5^(2+h)?

Also, is there a way to solve this question?  I've read the help.  I'm
studying for my final and am trying to find the answer to an
even-numbered question from my text.

Factor 5^(7x/2) - 5^(x^2), with sqrt(5^x) being one of the factors.
The answer I get is sqrt(5^x) times( (5^7)-1).

Thanks for showing me how to do these.


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