$x-3\left(x-5\right)$

$\tan\left(\theta\right)+\cot\left(\theta\right)=\frac{1}{\sec\left(\theta\right)\:\cos\left(\theta\right)}$

$\left(6x^3-5\right)^2$

$\sqrt{x-8}=2$

$4x^2y^4+6x^5-10y$

$5\sec^2\left(2\right)\left(1-sin^2\left(x\right)\right)$

$\lim_{x\to0}\left(\frac{8}{2-e^{\frac{1}{.001}}}\right)$