[latex]lim_{n oinfty}{frac{6^n+4cdot3^n-2^n-4}{5^n-6^n}}=lim_{n oinfty}{frac{6^n}{6^n}frac{1+4cdot(1/2)^n-(1/3)^n-4/6^n}{(5/6)^n-1}} ofrac{1+0-0-0}{0-1}=-1[/latex] pozdrawiam   --------------- "non enim possumus quae vidimus et audivimus non loqui"