$n^2+22nq+121q^2$
$9q-9-q$
$2u^2=-5u-2$
$\frac{dy}{dx}=\frac{2y-x}{2x+y}$
$\int_1^{\infty}\left(\frac{\ln\left(t\right)}{t^2}\right)dt$
$6a^2+7a-10$
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