Question

( √9/7-√7+2/√7) √1/7=?

Answer 1

Desfaci paranteza si obtii relatia de mai jos dupa care aduci la acelasi numitor


$3/7-1+2/7 =-2/7$

Answer 2

$( \frac{\sqrt{9} }{7} - \sqrt{7} + \frac{2}{\sqrt{7} } )* \frac{\sqrt{1} }{7}= \\ ( \frac{3}{7}-\sqrt{7} + \frac{2\sqrt{7} }{7} )* \frac{1}{7}= \\( \frac{3-7\sqrt{7}+2\sqrt{7} }{7})* \frac{1}{7} = \\ \frac{3-5\sqrt{7} }{7}* \frac{1}{7}= \frac{3-5\sqrt{7} }{14}$

/robertinni