$\left(1+2x^n\right)^2$

$5m^2+5m$

$\frac{2}{\cot\left(x\right)\cdot\csc\left(x\right)}$

$\int\frac{\sqrt{2+3ctgx}}{sen^2x}dx$

$55-63-93+46+85-74-75-82$

$\frac{3}{2}\left(x+y\right)-\frac{5}{4}y=\frac{1}{2}\left(y+2\right)$

$\left(3\cdot10^{12}\right)\cdot\left(3\cdot10^4\right)$