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

$-96\cdot\left(-3\right)^1+2\cdot\left(-5\right)^2\cdot\left(-3\right)^0+35\cdot2^2-1500\cdot\left(-5\right)^0\cdot2^0\cdot\left(-3\right)^0$

$a^2+\:3a^2\:+\:3a^2\:+1$

$\frac{sen\:y}{cos^2}$

$12x^2+18x-12$

$4a^2\:b^2-9x^6\:y^8\:$

$\left(6w-8z\right)^3$