$y'\:=\:x^4+3x^2+e^{3x}\:$
$-\frac{224}{-8}$
$t^2\:+\:4t\:+\:4$
$\int\left(\frac{4x^2+10x-1}{\left(x+2\right)\left(x^2-4\right)}\right)dx$
$800-170\le630$
$\frac{d^2}{dx^2}\left(sen\left(x\right)\right)$
$-2\left(6-7\right)+8-3\left(-4+2-1+7-3\right)$
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