$\left(-3a^2b\right)\cdot\left(8ab^5\right)$

$\frac{x+3}{x^2+x-6}$

$sen\left(x\right)^2\cot\left(x\right)^2=\cos\left(x\right)$

$\int\cos^4\left(\frac{x}{3}\right)dx$

$\left|-5\right|+\left|-3\right|$

$\left(14w^4-4\right)\left(14w^4-48\:\right)$

$-3\left(10x\right)\:-3\left(10\right)\:+\:5\left(x\right)\:+\:5\left(2\right)$