$cot\left(x\right)-cos\left(x\right)^2\left(cot\left(x\right)\right)=cos\left(x\right)\left(sen\left(x\right)\right)$
$x=2y-3$
$\left(w^{14}\right)^{\frac{1}{4}}$
$\frac{5^{-2}}{3^{-2}}$
$x\:+\:2<3x\:+\:1$
$|67-24|\:-|17|$
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