$6xy-18ax$
$\frac{d}{dx}9^{-2x}$
$2\sin\left(2x\right)=3$
$f\left(x\right)=\sqrt{3x^2-36}$
$x^2+2x-6<0$
$n>\:n+1$
$2^3\:\cdot3^3\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:$
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