calculați pls repede !!

Calculați Pls Repede class=

Răspuns :

[tex]1).\\
a)...\,\frac{1}{\sqrt2}-\frac{1}{\sqrt{2\cdot3}}=\frac{\sqrt3-1}{\sqrt{2\cdot3}}\\
b)...\;\frac{1}{\sqrt4}-\frac{2}{\sqrt{10}}=\frac{1}{2}-\frac{2}{\sqrt{10}}
=\frac{\sqrt{10}-4}{2\sqrt10}[/tex]