$\frac{1-\sin\left(v\right)}{\cos\left(v\right)}+\frac{\cos\left(v\right)}{1-\sin\left(v\right)}=2\sec\left(v\right)$

$45a^2+18ab-36ab^2$

$\lim_{x\to1}\left(\frac{x}{\left(7x+11\right)ln\left(x\right)}\right)$

$3x-5<10$

$\left(5x^3\right)x\left(8x^5\right)$

$\left(\frac{3}{5}x-\frac{5}{6}y\right)^3$

$\sqrt{\frac{ab}{x}}$