Question

root 54 - root 18 - 2 root 2​

Answer 1

Answer:

3√6 - √2

Step-by-step explanation:

$\sqrt{54} - \sqrt{18} - 2 \sqrt{2} \\ = \sqrt{9 \times 6} - \sqrt{9 \times 2} - 2 \sqrt{2} \\ = \sqrt{9} \times \sqrt{6} - \sqrt{9} \times \sqrt{2} - 2 \sqrt{2} \\ = 3 \sqrt{6} - 3 \sqrt{2} - 2 \sqrt{2} \\ = 3 \sqrt{6} - \sqrt{2}$