Tính M

$$\begin{gathered} \mathrm{Cho} \mathrm{x},\mathrm{y},\mathrm{z} \mathrm{thỏa} \mathrm{mãn}: \frac{\mathrm{a}}{2009}=\frac{\mathrm{b}}{2010}=\frac{\mathrm{c}}{2011}. \\ \mathrm{Tính} \mathrm{M}=4(\mathrm{a}-\mathrm{b})(\mathrm{b}-\mathrm{c})-{(-\mathrm{a})}^2 \end{gathered}$$