$\cot^4\left(x\right)+\cot^2\left(x\right)=\cot^2\left(x\right)\cdot\csc^2\left(x\right)$

$\lim_{x\to\infty}\left(1+\frac{5}{x}\right)^{\frac{x}{5}}$

$144.\left(322^9\right)$

$2.92a+19.03>1.51$

$\int\left(2x^3\sqrt{x^2-1}\right)dx$

$\left(5+b\right)\left(b-5\right)\left(b-3\right)\left(3+b\right)$

$12+9q+13-15q$