$\frac{1}{3}x\:+\:\frac{3}{4}\:+\frac{2}{3}x\:-\:\frac{1}{4}\:-\:\frac{2}{3}x$

$\lim_{x\to-4}\left(\frac{x^2-3x-28}{x+4}\right)$

$-7=v-7$

$\frac{dy}{dx}=\left(2x\right)\left(y-30\right)^2$

$\frac{dy}{dx}\left(4x^5\cdot e^{8y}+2y^4\cdot e^{3x}=15\right)$

$\sqrt{2}sin\theta\:+1=0;\:0\le\:\theta\:<\:360$

$\int\left(x\cdot\left(x^2+5\right)^{20}\right)dx$