$\int sen\left(\frac{x}{3}\right)\cos\left(\frac{x}{5}\right)dx$

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

$5\:x\:=\:20$

$\left(4x^2-3x\right)^2\cdot\left(5x^7+4x^{\frac{1}{2}}\right)^3$

$\frac{36m^2-p^2}{6m+p}$

$\left(-\frac{1}{3}\right)-\frac{3}{5}\cdot\:\sqrt[4]{-3^3}$

$\frac{2a^3+1}{a-1}$