$\int\frac{1}{x\sqrt{\left(2x+1\right)}}dx$
$-486x-48$
$1,05-1,3$
$\left(.8+3\times4-15+\sqrt{81}-5^{2}+2^{4}$
$2407-\left(-8\right)$
$3x+1\:entre\:2x-4$
$\int\left(-cos2x\:sin2x\right)dx$
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