$3yx+1-2yx+3$
$k=\frac{-2senx}{2\:cosx}$
$-480\cdot69$
$\sqrt{k^{12}}$
$\left(3t\:+7\right)\:\left(3t\:+\:2\right)\:$
$2+432x^3$
$4y^2\:-\:25$
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