$\frac{1+cos\left(2x\right)}{sen\left(x\right)}=cot\left(x\right)$
$\frac{2ab^5c^2}{a^3bc^2}$
$-36\left|-1\right|$
$3\tan^2\left(x\right)=2\tan\left(x\right)+2$
$\frac{3}{8}^{-4}$
$y^2-1+2y^2$
$p^2-16p+64$
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