$\int\frac{\left(.3x+1\right)}{\left(3x-1\right)^2}dx$
$27x^2+12x-7$
$3\left(x-3\right)^2$
$\frac{x^2+7x+10}{x+4}$
$1,91\:+\:-0,772\:$
$\int e^{\left(5x+1\right)}dx$
$1350+560$
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