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Solve for x
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Solve for x (complex solution)
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25+125=6\times 5^{x+1}
Multiply both sides of the equation by 6.
150=6\times 5^{x+1}
Add 25 and 125 to get 150.
6\times 5^{x+1}=150
Swap sides so that all variable terms are on the left hand side.
5^{x+1}=\frac{150}{6}
Divide both sides by 6.
5^{x+1}=25
Divide 150 by 6 to get 25.
\log(5^{x+1})=\log(25)
Take the logarithm of both sides of the equation.
\left(x+1\right)\log(5)=\log(25)
The logarithm of a number raised to a power is the power times the logarithm of the number.
x+1=\frac{\log(25)}{\log(5)}
Divide both sides by \log(5).
x+1=\log_{5}\left(25\right)
By the change-of-base formula \frac{\log(a)}{\log(b)}=\log_{b}\left(a\right).
x=2-1
Subtract 1 from both sides of the equation.