Odpowiedź :
[tex]\frac{-4\sqrt{14} }{3\sqrt{7} }[/tex] = [tex]\frac{-4\sqrt{14}*\sqrt{7} }{3\sqrt{7}*\sqrt{7} }[/tex] = [tex]\frac{-4\sqrt{98} }{3*7}[/tex] = [tex]\frac{-4*7\sqrt{2} }{21}[/tex] = [tex]\frac{-4\sqrt{2} }{3}[/tex]
[tex]\frac{-4\sqrt{14} }{3\sqrt{7} }[/tex] = [tex]\frac{-4\sqrt{14}*\sqrt{7} }{3\sqrt{7}*\sqrt{7} }[/tex] = [tex]\frac{-4\sqrt{98} }{3*7}[/tex] = [tex]\frac{-4*7\sqrt{2} }{21}[/tex] = [tex]\frac{-4\sqrt{2} }{3}[/tex]