$2-2\sin\left(x\right)=4\cos\left(x\right)^2$
$\left(x^2-1\right)\left(x^2+x\right)$
$\left(\sqrt[48]{x\sqrt[3]{x}}\right)^{-1}$
$62>x-21$
$ax+ay=a\left(x+y\right)$
$4x+5-2-8$
$-8\:restar\:5$
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