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

$a^2b+\left(-6a^2b\right)$

$2\left(-\frac{9}{5}z-1\right)$

$\left(x+2\right)\left(x+3\right)\sin\left(5\right)$

$\left(\frac{1}{3}a+\frac{1}{4}b\right)^2$

$\int\left(2x+1\right)^{3\:}dx$

$\int\frac{1}{\left(x+1\right)}dx$