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

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

$\left(-2x^4y^0\right)\left(-10x^{-4}\right)$

$\sqrt{16}+13\cdot11$

$\tan^2x+21=\sec^2x+20$

$3\sqrt{\frac{a^x}{2}}\cdot\:2\sqrt{\frac{a^{x-3}}{5}}$

$\csc\theta-\sin\theta=\frac{\cot^2\theta}{\csc\theta}$