$\sen\left(3x+1\right)$
$-36-\left(-24\right)$
$\left(8b\:+\:4\right)\left(8b\:-\:4\right)$
$sec^215$
$a4.a-8$
$\frac{x^{2}}{1-x^{6}}$
$-101.78+13,76$
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