$\frac{2\left(\sqrt{x+2}-1\right)}{x+1}$
$44^2-2^2+5-2-34$
$\int_{-1}^2\sqrt{5+4x+x^2}dx$
$\int_0^a\left(x\sqrt{a^2-x^2}\right)dx$
$\int\:\:e^{2o}sen2o\:do$
$2sin^2x\:+\:tanxcosx\:=\:1$
$1,09-9,129$
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