$\log_{25}\left(5\right)=1.2$

$\frac{1}{2}\log_b\left(a\right)-2\log_b\left(5\right)-3\log_b\left(x\right)$

$\frac{x^2}{9}-\frac{4x}{3}+16$

$\int\sqrt[4]{\left(x+1\right)}dx$

$\lim_{x\to\frac{\pi}{2}}\left(\frac{1-sin\left(x\right)}{1+cos\:\left(6x\right)}\right)$

$\int\left(\frac{2x^2+3}{\left(x^2+4\right)\left(x-2\right)}\right)dx$

$2mn\:+\:\:\left(-3mn\right)\:+\:8mn\:=\:$