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anonymous
 3 years ago
why does the reciprocal of (2√5)/5 equals √5/2 ???
anonymous
 3 years ago
why does the reciprocal of (2√5)/5 equals √5/2 ???

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hartnn
 3 years ago
Best ResponseYou've already chosen the best response.1because \(\huge \frac{\sqrt 5}{5}=\frac{\sqrt 5}{\sqrt5.\sqrt 5}=\frac{1}{\sqrt 5}\)

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0i still dont get it..><

hartnn
 3 years ago
Best ResponseYou've already chosen the best response.1\(\huge \frac{2\sqrt 5}{5}=\frac{2\sqrt 5}{\sqrt5.\sqrt 5}=\frac{2}{\sqrt 5}\) which step ?

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0(2√5)/5 can also be written as \[\frac{ 2 }{ \sqrt{5} }\]

hartnn
 3 years ago
Best ResponseYou've already chosen the best response.1reciprocal means inversing the ratio, a/b becomes b/a

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0why is the denominator √5 multiply by √5

hartnn
 3 years ago
Best ResponseYou've already chosen the best response.1any number can be expressed as \(a=\sqrt a.\sqrt a\)

hartnn
 3 years ago
Best ResponseYou've already chosen the best response.1\(x^m.x^n=x^{m+n} \\so, \huge \sqrt 5.\sqrt 5= 5^{1/2}.5^{1/2}=5^{1/2+1/2}=5^1\)

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0wait basically....√5 and 5 is the same?

hartnn
 3 years ago
Best ResponseYou've already chosen the best response.1no.... 5 and \(\sqrt 5.\sqrt 5\) are same.

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0but why do we have to multply by √5??

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0OMG i think i got it!!

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0so first, the reciprocal of (2√5)/5 is 5/2√5

hartnn
 3 years ago
Best ResponseYou've already chosen the best response.1es, you can do that way also!

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0and √5 crosses out which equals. √5 / 2!!

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0thank you soooo much!!!! im sorry if i put some streess on you!! i am really bad at math ><

hartnn
 3 years ago
Best ResponseYou've already chosen the best response.1no problem at all :) welcome ^_^
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