Algebra

Express \log_{15} 72 in terms of P and Q.

$P = \log_8 3\\ 8^{log_8\ 3}=3\\ 8^P=3\\ \color{blue}8=3^{\frac{1}{P}}$

$Q = \log_3 5\\ \color{blue}3=5^{\frac{1}{Q}}$

$x=\log_{15} 72\\ \color{blue}15=72^{\frac{1}{x}}$

will be continued

I can't go any further. Sorry!

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