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Solve for x
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Solve for x (complex solution)
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25^{x}=100
Use the rules of exponents and logarithms to solve the equation.
\log(25^{x})=\log(100)
Take the logarithm of both sides of the equation.
x\log(25)=\log(100)
The logarithm of a number raised to a power is the power times the logarithm of the number.
x=\frac{\log(100)}{\log(25)}
Divide both sides by \log(25).
x=\log_{25}\left(100\right)
By the change-of-base formula \frac{\log(a)}{\log(b)}=\log_{b}\left(a\right).