$\left(x+\sin\left(y\right)+3\right)\:dx+\left(x-2\:siny\right)cosy\:dy=0$

$\frac{x^6-64}{x+3}$

$\left(7x\right)\left(5yz\right)^2$

$-x+x^2+2x^2-y$

$2xy^2+3x^2y$

$\lim_{x\to\frac{\pi}{2}}\left(\frac{\ln\left(\tan\left(x\right)\right)}{\sec\left(x\right)}\right)$

$8x^2-26x-24$