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

$\lim_{x\to0}\left(\:\frac{\sin\left(6x\right)^2}{3x^2}\right)$

$-\sqrt{1296}$

$6-0,33-7\cdot0,27$

$\lim_{x\to\pi}\left(\frac{sin\left(x\right)}{\sqrt[2]{x-\pi}}\right)$

$\frac{a+m}{c+n}-\frac{b+c}{3}+mnx$

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