$\int\cos\left(x\right)\:cos^5\left(sen\:x\right)\:dx$
$\int\left(6-2x\right)^5dx$
$\left(n^2+6\right)\left(n-6\right)$
$\frac{9x^4-x}{x^2+1}$
$9n-4=95$
$\left(xy^3+4y^3\right)dy-7xdx=0$
$\int x^3e^{-3x}dx$
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