$4,32+1.204$
$\sqrt{2-2cosx}$
$10f^2-11f-8$
$\cos^2\left(a\right)-3\sin^2=0$
$\:2x+1<3$
$\left(\frac{-2}{-9}\right)^{-2}$
$4\left(-3g-2\right)+6$
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