$-\frac{3}{\frac{1}{3}}$

$\left(y^3+\:2x^2\right).\left(-2y^6\:+\:2x^2\right)$

$\left(-6\right)\cdot\left(-6\right)\left(-3\right)$

$\int4x+5zdy$

$\int_t^{t^2}\left(sin\left(tx\right)\right)dx$

$\left(e^y+1\right)^2e^{-y}dx=-\left(e^x+1\right)^5e^{-x}dy$

$2a^4+\:2ab^3$