$\int\frac{cos\:x}{\sqrt{2+sinx\:}}dx$

$\lim_{x\to0}\left(\frac{\left(e^x+e^{-x}\right)}{x}\right)$

$\frac{5x+20}{x}\:=7$

$\left(xy-x+y-1\right)dx+\left(xy+x+3y+3\right)dy=0$

$\lim_{x\to-5}\left(x^4-3x\right)\cdot\left(x^3+4x^2-1\right)$

$\left(\frac{3}{4}x^6-\frac{1}{2}y^{10}\right)^2$

$\left(7+8v\right)^2$