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Condense the following logs into a single log:


8log_(g) x+5log_(g) y


8log_(5) x+(3)/(4) log_(5) y-5log_(5) z

User JRunner
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1 Answer

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QUESTION 1

The given logarithm is


8\log_g(x)+5\log_g(y)

We apply the power rule of logarithms;
n\log_a(m)=\log_(m^n)


=\log_g(x^8)+\log_g(y^5)

We now apply the product rule of logarithm;


\log_a(m)+\log_a(n)=\log_a(mn)


=\log_g(x^8y^5)

QUESTION 2

The given logarithm is


8\log_5(x)+(3)/(4)\log_5(y)-5\log_5(z)

We apply the power rule of logarithm to get;


=\log_5(x^8)+\log_5(y^{(3)/(4)})-\log_5(z^5)

We apply the product to obtain;


=\log_5(x^8* y^{(3)/(4)})-\log_5(z^5)

We apply the quotient rule;
\log_a(m)-\log_a(n)=\log_a((m)/(n) )


=\log_5(\frac{x^8* y^{(3)/(4)}}{z^5})


=\log_5(\frac{x^8 \sqrt[4]{y^3} }{z^5})

User Sixto
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