$-900\cdot130$
$\left(4x-5\right)\left(2-3x\right)$
$315-653\left|-1\right|$
$-2x^3+5x^2-3x+2$
$\sin\left(\frac{90}{\frac{1}{64}.48}\right)$
$\frac{b^2-9b-x}{b^2}$
$3\:x\:>\:12$
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