Question

Determinati nr. real "n* stiind ca :

n√5=√125



urgent va rog!!

Answer 1

descompunem √125 si da 5x5x5 si atunci scoatem 5x5 de sub rdical si rezulta ca n=5

Answer 2

$n \sqrt{5}= \sqrt{125 } \\ \sqrt{125} = \sqrt{25 \cdot 5} = \sqrt{5^2\cdot 5}=5 \sqrt{5} ; \\ \Rightarrow \boxed{n=5}.$