Question

√20 - √45 + 3√18 + √72

Answer 1

{5*9} + \sqrt{9*2} + \sqrt{36*2} [/tex]

$2 \sqrt{5} -3 \sqrt{5} +3*3 \sqrt{2} +3*2 \sqrt{2}$$\sqrt{5*4} - \sqrt</p><p>[tex]- \sqrt{5}+15 \sqrt{2}$