$$\Big(\sqrt{41\frac{2}{3}}-\sqrt{6\frac{2}{3}}\Big)/\sqrt{\frac{5}{27}}=\Big(\sqrt{\frac{125}{3}}-\sqrt{\frac{20}{3}}\Big)/\frac{\sqrt{5}}{3\sqrt{3}}=\Big(5\sqrt{\frac{5}{3}}-2\sqrt{\frac{5}{3}}\Big)/\frac{\sqrt{5}}{3\sqrt{3}}=$$$$=3\sqrt{\frac{5}{3}}/\frac{\sqrt{5}}{3\sqrt{3}}=9.$$ отвечен 21 Апр '13 22:11 Anatoliy |