Question

La 1 plsss va rog
Corona cn vrea

Answer 1

Răspuns: D.18

Explicație pas cu pas:

$n=\sqrt{\not{54}\cdot\frac{6}{\not{9} }}+\sqrt{\not{540}\cdot\frac{6}{\not{90}} } +\sqrt{\not{5400}\cdot\frac{6}{900} } \\\\n=\sqrt{36} +\sqrt{36} +\sqrt{36} \\\\n=6+6+6\\\\\boxed{n=18}$