$\left(\frac{70}{-2}\right)$

$\log_b\left(x+6\right)-\log_b\left(x+2\right)=\log_b\left(x\right)$

$\log_{10}\left(5\right)-\log_{10}\left(16\right)+2\log_{10}\left(2\right)+\log_{10}\left(8\right)$

$15.15^{\frac{1}{5}}$

$2x^{\frac{5}{3}}-5x^{\frac{4}{3}}=0$

$\int5sin^4xcosxdx$

$\int\sec^8\left(x\right)\tan\left(x\right)dx$