$4n\:+\:3\left(n+3\right)$
$\cos\left(a\right)\left(1+\sec\left(a\right)\right)\cot\left(a\right)=\text{sen}\left(a\right)$
$\left(2xy+5\right)\left(2xy-5\right)$
$ax+ac+ad$
$\lim_{x\to\infty}\left(\sin\left(6x\right)-2x\right)$
$15,-25,\:0,\:50,\:75,\:35\:-5,\:20$
$\left(g^3\right)^5$
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