$\int\left(\frac{1}{3\sin\left(x\right)^2}\right)dx$

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

$\left(-7\right)\left(+135\right)$

$\left(2m^5-5q^2\right)^2$

$\left(cosxcosy\right)dx-\left(sinxsiny\right)dy=0$

$256\sin^4\left(2x\right)\sin\left(x\right)$

$\left(4a+13b\right)\left(-3a-5b\right)$