$45n^2+35n-10$
$\frac{dx}{dy}=\frac{4-x^2}{4-y}$
$11x+7\cdot11x+7$
$m^2+6m-7=0$
$\sqrt{\left(-2\right)^2-1}$
$\lim_{x\to2}\left(\frac{\sqrt{4u+1}-3}{xu-2}\right)$
$\int\sqrt{4x+8}.dx$
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