$\int\:5x^2\left(x^3+1\right)\:dx$

$\lim_{x\to0}\left(\frac{sin^2\left(x\right)}{ln\left(1+3x\right)}\right)$

$\int_2^9\tan dx$

$\lim_{x\to\infty}\left(\left(\frac{x^3}{2}\right)\left(\frac{7}{x}-\sin\left(\frac{7}{x}\right)\right)\right)$

$\int\frac{-x}{1+x^2}dx$

$\int\frac{x^{2}}{\left(x^{2}+4\right)^{\frac{3}{2}}}dx$

$32y+16$