$10x-6>56$
$-11a+33=-11$
$\left(x^4-n^4\right)^3$
$tan\left(x-y\right)=\frac{a-b}{a+b}\:$
$-20:4:\left(-5\right)+8.3$
$4cost^2$
$\frac{d}{dx}\left(7\sin\left(xy^2\right)\right)=5$
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