Question 121369: Please help me understand how to do this. I am to simplify if possible and solve.
5 to the negative 7 th *5^9 = Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! 5 to the negative 7 th *5^9 =
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The general rules:
a^x*a^y=a^(x+y)
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(a^x)/(a^y) = a^(x-y) = 1/(a^(y-x)
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Your Problem:
5^-7*5^9 = 5^(-7+9) = 5^2 = 25
OR
5^-7 * 5^9 = (5^9)/(5^7) = 5^(9-7)= 5^2 = 25
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Cheers,
Stan H.
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