$\left(x^3y^3z^3\right)^2$

$\frac{64x^6-512y^{12}}{4x^2-8y^4}$

$\frac{3x+1}{4}-\frac{1}{3}\le\frac{2}{15}\left(3x+2\right)+\frac{4\left(1-x\right)}{3}$

$\int\frac{16-10x^2}{\left(x^2-1\right)\left(x^2-4\right)}dx$

$\int\frac{x^2}{\left(x^2+4\right)\left(x^2+4\right)}dx$

$\sqrt{2x^2}+x$