$\int\frac{t^2}{\left(9+4t^2\right)^2}dt$

$\frac{q^2-1}{\frac{q^2+2q-3}{\frac{9^{-4}}{9^{+3}}}}$

$2y=6-x$

$\sin\left(\frac{2}{n\sqrt{n}}\right)$

$x-5\sin3x^2$

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

$\int_0^{4\pi}\left(\frac{\cos\left(z\right)}{\sqrt{5+4\sin\left(z\right)}}\right)dz$