$\lim_{x\to a}\left(2x-a\right)$

$\frac{\left(10a^3+3a^2+3\right)}{\left(10a+3\right)}$

$\left(\frac{3}{4}x\right)+2\le\left(-\frac{2}{5}\right)$

$\left(2x+\left|-5-\left(x-y\right)\right|\right)-\left(12x^2-6xy+24y^2\right)$

$\int\frac{x^{5\:}}{\sqrt{x^2+100}}dx$

$\int_{-1}^1\left(\sqrt{2-x^2}\right)dx$

$\lim_{x\to0}\left(\frac{6x+in\left(x\right)}{3x-in\left(x\right)}\right)$