$7\left(8h\:-\:13\right)\:+\:6h\ $

$\int\sec^3\left(1-x\right)dx$

$\int\frac{sec^2\left(2x\right)}{1+3tan^2\left(2x\right)}dx$

$\int_1^{\infty}\left(\frac{\left(atan\left(x\right)\right)^p}{1+x^2}\right)dx$

$\left|1+2\right|-3$

$28a^3-12a^2+16a^2$

$w=\ln\left(x+y\right)$