$9x^2-b^2=0$
$18\left(-24\right)\left(-5\right)\left(-101\right)\left(-7\right)$
$1-2+3-4+5-6+7-8+9-10$
$44x^2-176^2$
$-9-\left(6-8\right)$
$\:x^2\ast\:x^3$
$\frac{4}{x}<7$
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