$\frac{d^2}{dx^2}\left(x^{\frac{3}{2}}+y^{\frac{3}{2}}=1\right)$

$\left(7a^3-9b^5\right)^2$

$f\left(x\right)=\left(8x^2+10\right)\left(-10x^3-3x^{-3}-9\right)$

$\frac{2}{3}xy^{2}-\frac{2}{4}x^{3}y-\frac{1}{8}yx^{3}+y^{2}-2y^{2}x+x^{2}$

$49x^4\:-\:100y^4$

$\left(\frac{-3}{1}z\right)-\left(\frac{3}{5}z\right)$

$-2-\left(-5\right)+\left(3-2\right)-\left(2-4\right)$