Упростите: $$\sqrt{49 \cdot 22} - \sqrt{4 \cdot 22}$$

$$\sqrt{49 \cdot 22} - \sqrt{4 \cdot 22} = \sqrt{49} \cdot \sqrt{22} - \sqrt{4} \cdot \sqrt{22} = 7\sqrt{22} - 2\sqrt{22} = (7-2)\sqrt{22} = 5\sqrt{22}$$

Ответ: $$5\sqrt{22}$$