$\frac{sec\left(y\right)-\csc\left(y\right)}{sec\left(y\right)+csc\left(y\right)}$

$\frac{x^{3}+1}{x^{2}-x-2}$

$64x^2-32$

$\lim_{x\to-\infty}\left(\frac{\left(x^6-23\right)}{x-9}\right)$

$2du+5d-15u-20d+8du-10d$

$\lim_{x\to\infty}\ln\left(x+e^{2x}\right)-\ln\left(a+e^{4x}\right)$

$\int\frac{x+3}{\left(3x+5\right)\left(4x^2+4x+1\right)}dx$