$\int\:\frac{1}{x^2-9x}dx$
$\left(\frac{1}{4}+\frac{1}{2}ab\right)^2$
$-2x^2-24x-96=0$
$6f^2+7f$
$b^2-8b+15$
$\left(2xy\right)\left(xy\right)\left(-xy\right)$
$498^2$
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