$3^{-9}\cdot3^{11}$
$\left(3x-4\right)\left(2x-1\right)$
$\int8\cdot d\cdot$
$10n^2+21n+9=0$
$\sin\left(x-\frac{\pi}{6}\right)$
$3x>900$
$x^2-28x+-14$
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