Daca P(a,b) apartine graficului atunci f(a)=b,
[tex]
f(-3m)=(1-2 \sqrt{3})(-3m)+3\sqrt{3}=-3m+6m\sqrt{3}+3\sqrt{3}=\\
-3m+(6m+3)\sqrt3\\
cum\quad f(-3m)=2n-9+3n\sqrt{3}, deci \quad 2n-9=-3m(1) \quad si\\
3n=6m+3(2),\\
din (1), 3m=9-2n, si\quad inlocuim\quad in \quad (2), avem
3n=2\cdot 3m+3\\ 3n=2(9-2n)+3, 3n=21-4n, 7n=21, n=3,\\
3m=9-2\cdot 3, 3m=6, m=2.[/tex]
