$\lim_{x\to0}\left(\frac{e^x}{3x^2}\right)$

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

$\int\frac{-6s^2+11s+9}{s^2\left(s+1\right)}ds$

$-0.75+\left|\left(\frac{\sqrt{16}}{\sqrt{25}}\right)-0.2\right|+\frac{2}{3}\cdot\left(\frac{1}{4}\right)^2$

$5x+13=7x-1$

$\lim_{x\to0}\left(\frac{\left(-x+3\right)^2-9}{-3x}\right)$

$\lim\:_{x\to\:1}\left(\frac{8x^{\frac{7}{4}}-5x^{\frac{4}{5}}-3}{x^2-1}\right)$