$\int\frac{\left(sen\left(u\right)\right)}{2a}\:du$
$5x+1=3x-5$
$\frac{2n}{\left(3^{2n-1}\right)}$
$\left(-82\right)\cdot\left|\left(-4\right)+19\right|$
$9a-3a+5a$
$3^2-3^3-35$
$\left(x^3-1\right)\left(x^3+2\right)$
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