$\left(x^3-9\right)\left(x^3+7\right)$

$12+\left(4-\left(-15-\left(1+2\right)-10\right)\right)$

$\int\frac{2x^2-9x-6}{x^3-x^2-6x}dx$

$\int_0^{cos\:y}y\:dx$

$\frac{\left(-infinito\cdot\:e^{-infinito}\right)}{2}$

$\frac{4}{5}\sqrt{10}\cdot\frac{3}{2}\sqrt{10}$

$4+\left(3-4\right)-\left(2-6-7\right)$