$\int\left(x^{13}\sin\left(x^{14}\right)\right)dx$

$\int\sqrt[5]{x^7}dx$

$\int_{\frac{3\pi}{2}}^{\pi}\sin\left(x\right)\:dx$

$\frac{dy}{dx}+\left(\frac{2}{x\left(x^2+1\right)}\right)y=\frac{\left(x^2+1\right)^2}{x}$

$\frac{200\left(3\right)-600\left(3\right)}{3^2-9}$

$-2\left(x+3\right)+5$

$7 x - 10 x ^ { 2 } + 15 x ^ { 2 }$