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

$\lim_{x\to0}\left(\frac{\left(2e^{2x}-2\right)^3}{3e^{x^2}-3x-3}\right)$

$\frac{d}{dx}\left(4x^3y^3+\frac{1}{y}-\frac{3}{x}=seny\right)$

$\frac{d}{dx}tanx^2cscx^2$

$3x^2\:>2x^2+5x+6$

$7^3-2^3$

$\int_3^4\left(\tan\left(x\right)\cdot\sec^2\left(x\right)\right)dx$