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7. Gaseste nr naturale prime a, b, c, daca
[tex] \frac{a \: \sqrt{b} }{c } = \frac{15}{ \sqrt{63} } [/tex]




Răspuns :

a√b/c=15/√63

a√b/c=15/3√7

a√b/c=5/√7

a√b/c=5√7/7

a=5

b=7

c=7