$tanx+2sin^2x=tanx$

$\frac{x^5+x^3-20x}{x+2}$

$\left(1+sen\left(\theta\right)\right)\left(1-sen\left(\theta\right)\right)$

$\left(x^2-5\right)\left(x^2+7\right)-\:\left(x^2+3\right)^2$

$\left(n^2-6mn\right)\left(n^2+6mn\right)$

$196m^4-49n^8p^6$

$\int_{-4}^2\left(\frac{2}{x^6}\right)dx$