ex 3 vă rog multttt ...ajutorrr .....dau coroanaaa ....va roggg

Răspuns:
a)
[tex]\frac{3}{\sqrt{12} } - \frac{1}{\sqrt{27} } = \frac{7\sqrt{3} }{18}[/tex]
b)
[tex]\frac{1}{\sqrt{18} } -\frac{3}{\sqrt{32} } + \frac{5}{\sqrt{72} } = \frac{5\sqrt{2} }{24}[/tex]