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5 radical din 8 supra 3 radical din 7 rationalizare

Răspuns :

[tex]\frac{5\sqrt8}{3\sqrt7}=[/tex][tex]\frac{5\sqrt{8}\sqrt{7}}{3\sqrt{7}\sqrt7}[/tex][tex]=\frac{10\sqrt{14}}{3*7}=[/tex][tex]\frac{10\sqrt{14}}{21}[/tex]
5×2√2\3√7=10√2\3√7=10√14\21