Question

$\sqrt{18} + \sqrt{50} - \sqrt{72}$

Answer 1

√18 + √50 + √72 =
√2*3² + √2*5² + √2*2²*3² =
3√2 + 5√2 + 2*3√2 =
3√2 + 5√2 + 6√2 =
(3+5+ 6)√2 =
14√2