$\tan\left(x\right)+\frac{\csc\left(x\right)}{\sec\left(x\right)\left(\csc\left(x\right)+1\right)}=\sec\left(x\right)$

$5.4-32-6+9.3$

$\lim_{u\to\frac{\pi}{4}}\left(\frac{5\tan\left(u\right)-\cot\left(u\right)}{2u-\frac{\pi}{2}}\right)$

$x^{2+3x+2}$

$\int\left(2cosh\left(u\right)\right)dx$

$-\:54\:+\:786\:$

$\lim_{x\to0}\left(\frac{\left(6^x-2^x\right)}{x}\right)$