$2\cot^2\left(x\right)+3\csc^2\left(x\right)-8\cot\left(x\right)=0$

$\left(-50\right)-\left(-9\right)-\left(-13\right)$

$5x^2-x-6$

$\int x\left(1-x^2\right)^5dx$

$\lim_{x\to\infty}\left(x+e^2\right)^{\frac{2}{x}}$

$\left(2x^2+20y-3\right)^2$

$\int e^{\frac{-1}{4}x}\cdot\sin\left(\frac{\sqrt[2]{15}}{2}x\right)dx$