$\frac{d}{dx}\left(\frac{\left(9+4x\right)^2}{\left(\sqrt[3]{x^2+1}\right)}\right)$

$\int\frac{x+3}{x^3+x^2-2x}dx$

$\cos\left(e\right)\cdot\tan e+1-\cos\left(e=\sin e\right)$

$f\left(x\right)=\left(\frac{x-1}{\sqrt{x}}\right)$

$\left(m+15\right)^2$

$\frac{1}{\left(sinx-1\right)}-\frac{1}{\left(sinx+1\right)}=2sec^2x$

$\int\cos\left(x\right)\sin\left(y\right)dy$