Question

(FCC-SP) simplificando a expressão √9/2 - √2/9 obtemos .

Answer 1

$\boxed{\sqrt{ \frac{9}{2} } - \sqrt{ \frac{2}{9} } ~\to \frac{3}{ \sqrt{2} } + \frac{ \sqrt{2} }{3} ~\to~ \frac{3 \sqrt{2} }{2} - \frac{ \sqrt{2} }{3} ~\to \frac{9 \sqrt{2} -2 \sqrt{2} }{6} = \frac{7 \sqrt{2} }{6} }$