$2^3+2^0-2^2$
$-4x^2\left(4x^3\right)$
$csc2x\:=1$
$x^2-13x+36\ge0$
$2.2^{7\:}^4$
$\frac{10v^4}{6v}$
$k\left(2+k\right)$
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