Question

simplify root 72+root 800-root18
​

Answer 1

Answer: 23√2

Step-by-step explanation:

$\sqrt{72} + \sqrt{800} - \sqrt{18}\\= \sqrt{2 * 2 * 2 * 3 * 3} + \sqrt{2*2*2*2*2*5*5} - \sqrt{2*3*3} \\= 6\sqrt{2} + 20\sqrt{2} - 3\sqrt{2} \\= 23\sqrt{2}$