$cscx.cotx.\:sen^2x=\frac{1}{secx}$
$6x^2+11x=2$
$\sqrt[20]{x}\cdot\sqrt[20]{x^{2}}\cdot\sqrt[2]{x^{3}}\cdot\sqrt[20]{x^{4}}$
$5x^2y+3xy^2-2x^2y+32^2y+4xy^2$
$\cos a=\frac{2}{7}$
$\int\frac{1-\csc^2\left(x\right)}{x+\cot\left(x\right)}dx$
$\sqrt{8}\:\sqrt{x}\:-\:\sqrt{1}2\:\sqrt{x}\:+\:\sqrt{2}\:\sqrt{x}$
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