$\int x^5\left(4+14x^6\right)^8-3dx$

$-\ln\left(x+1\right)+\ln\left(\sqrt{1+x^2}\right)$

$2\cot\left(a\right)\cot\left(2a\right)=\cot^2\left(a\right)-1$

$32-\left(-8\right)+\left(-8\right)$

$\lim_{x\to0}\left(\frac{\sqrt{15}-\left(sen\left(x\right)-x\right)}{15x^3}\right)$

$\sqrt[3]{8m^4}n^{12}\cdot\sqrt[3]{12mn}$

$3x^9\cdot\:5$