$\lim_{x\to0}\left(\frac{x^2}{2-\sqrt{4+x^2}}\right)$

$\lim_{x\to\infty}\left(\frac{1}{\sin\left(x\right)}\right)$

$6.8\cdot100$

$\int\frac{\left(1\right)}{\left(36-x^2\right)^{\frac{\left(3\right)}{2}}}dx$

$380\cdot3$

$x^3\left(x+1\right)^6$

$\lim_{x\to\infty}\left(\frac{\sqrt{4x^4-x}}{x^4+1}\right)$