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Use properties of logarithms to find the exact value of the expression. Do not use a calculator.logv5 6 times log v6 25=

Use properties of logarithms to find the exact value of the expression. Do not use-example-1
User JoshuaF
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1 Answer

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We need to solve the next expression using the properties of the logarithm:


\log _56\cdot\log _625

Use the next logarithm property on both:


\log _ab\text{ =}(\ln b)/(\ln a)

So:


\frac{\ln6}{\ln\text{ 5}}\cdot(\ln 25)/(\ln 6)

Cancel the like terms, in this case, ln 6

Then:


\frac{\ln \text{ 25}}{\ln 5}

Rewrite the expression ln 25, using the next property:


\ln x^{b\text{ }}=\text{ b}\cdot\ln \text{ x}

Then


\ln 25\text{ = }\ln 5^2=2\ln 5

Simplify the like terms:


(2\ln 5)/(\ln 5)=2

Therefore, The result is 2.

User Maxsap
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