Question

Помогите пожалуйста 3 задание

Answer 1

$frac{9sqrt{72}-sqrt{18}+sqrt{450}}{3sqrt{2}} =frac{9sqrt{72}}{3sqrt{2}}-frac{ sqrt{18} }{3sqrt{2}}+frac{ sqrt{450} }{3sqrt{2}}=3sqrt{frac{72}{2}}-sqrt{frac{18}{9bullet2}}+sqrt{frac{450}{9bullet2}}=\\=3bullet sqrt{36} -sqrt{1}+sqrt{25}=18-1+5=22.$