$\frac{x^2}{10}-16x+200$

$\lim_{x\to\infty}\left(\frac{3-x}{x^2+5}\right)$

$-2\:+\:\left(-3\right)\:-\:3-\left(-2\right)\left(-3\right)=\:\:\:\:$

$\sqrt{4-25\left(\frac{2}{5}sin\:\theta\:\right)}$

$3^6\cdot3^2$

$\left(5x^{5}+3x^{2}-2x^{3}-7x^{2}-6\right)+\left(-5x^{5}-3x^{2}-2x^{3}+3x^{2}-4x_{7}$

$31y+13y+30y$