$\lim_{x\to2}\left(x^2+3x-1\right)$

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

$\left(-7x^3y\right)\left(5x^2y^3\right)$

$x^3\:+\:x^2-x\:-1$

$\int\left(2x+2\right)^{\frac{5}{2}}dx$

$\lim_{x\to\infty}\frac{4x^2+5}{2x-1}$

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