$\sqrt{2}\sin\left(x+15\right)=1$

$\left(y+1\right)+\left(y-1\right)\left(1+x^2\right)\left(\frac{dy}{dx}\right)=0$

$\frac{\left(\left(a\cdotb\right)^{2}\cdot\left(a^{-3}+b^{3}\right)^{3}}{\left(2^{c}\cdot3^{2}\right)^{-3}\cdot\left(6^{4}\right)^{4}}$

$2x+20\le-30$

$\lim_{x\to0}\left(\frac{\tan\left(x\right)-\sin\left(x\right)}{x}\right)$

$31+1-\left(-6\right)+1$

$x^2y'+\:5xy=\frac{sin\left(x\right)}{x}$