$\frac{x+2}{2x-3}<4$

$\int\frac{1}{\sqrt{-x^2-6x+40}}dx$

$\left(cos\left(x\right)+3x^2y\right)dx+\left(x^3-y^2\right)dy=0$

$\sqrt{12^2+5^2}$

$\left(1+\frac{1}{n-1}\right)^n$

$\:\int\:\frac{4x}{x^3+x^2+x+1}dx$

$\cos\left(x\right)\left(\frac{1}{\sin\left(x\right)}-1\right)$