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Question Number 202584 by cortano12 last updated on 30/Dec/23

Answered by dimentri last updated on 30/Dec/23

$$2\left(\begin{array}{c}\mathrm{m}\\ 2\end{array}\right)-4\mathrm{m}=84$$$${\mathrm{m}}^2-5\mathrm{m}-84=0$$$$\mathrm{m}=12$$

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