$-4-\left(-5+6-7\right)-\left(8-9\right)+\left(20-15\right)$

$751\:+\:654\:+\:32.788$

$\lim_{x\to2}\left(\frac{2-x}{\left|x-2\right|}\right)$

$\int\left(\frac{1}{y\ln\left(y\right)}\right)dx$

$m ^ { 4 } - 17 m ^ { 2 } + 6 m$

$\frac{x}{5}+3=12$

$p\left(5\right)=\frac{25\left(1\right)}{5\left(1\right)\left(25-5\right)\left(1\right)}\left(.05^5\right)\left(95^{25-5}\right)$