$-\frac{120}{-10}$

$2x^2-9x^3+8x^2-3x-5\:+\:9x^4-6x^3+3x+3$

$\sec^2\left(x\right)\left(\sec\left(x\right)+1\right)\left(\sec\left(x\right)-1\right)=\tan^4\left(x\right)+\tan^2\left(x\right)$

$\frac{1}{-9y^{-4}}$

$\int\frac{\left(8x-3\right)}{12x^2-7x-1}dx$

$-3+4-6+81-114+31-\left(-2-5\right)$

$\left(-2.^3\right).\left(-5.\right).\left(-3.^2\right)$