$\left[\frac{1}{5}m+n\right]^2$
$\int\frac{sec\left(x\right)}{sen\left(x\right)}dx$
$\sin\left(2x\right)=2\cos\left(x\right)\cos\left(2x\right)$
$\frac{\sqrt{-sin^2x+1}}{\sqrt{tan^2x+1}}\:$
$\left(9x^7-4\right)^2$
$5x+24=2x+9$
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