$\lim_{x\to\pi}\left(\frac{sin\left(2x\right)}{x-\pi}\right)$

$\int\frac{4+\sqrt{x}}{4-\sqrt{x}}dx$

$\left(-5-2i\right)-\left(3-3i\right)$

$\int_2^{\infty}\left(\frac{1}{x-1}\right)dx$

$\mathrm{\int\left(\frac{5x^3+3x^2+7x-3}{\left(x^2+1\right)^3}\right)\:}\:dx$

$\left(4x^6+6y^7\right)^3$

$\int\:\frac{1}{\left(4-x\right)^2}dx$