$sec-2\sqrt{3}=4sec$
$\frac{1}{\sqrt{2}}\sin\left(a\right)+\frac{1}{\sqrt{2}}\cos\left(a\right)-\frac{-1}{\sqrt{2}}\sin\left(a\right)-\cos\left(a\right)\frac{1}{\sqrt{2}}$
$42+36+14$
$x^2y^6-z^2$
$4x^3-8x^2-4x+8$
$xa-1^2$
$341\cdot3$
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