$\int_0^{2t}\left(sen3t\right)dt$

$\frac{9x^4}{16}+\frac{1}{2}+\frac{x^{-4}}{9}$

$\left(2w-3\right)\left(6+3w-w^2\right)$

$888-\left(-900\right)$

$1-\left(\frac{cos^2\left(x\right)}{1+sen\left(x\right)}\right)=sen\left(x\right)$

$1-\frac{a^2}{25}$

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