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hartnn Group TitleBest ResponseYou've already chosen the best response.1
because \(\huge \frac{\sqrt 5}{5}=\frac{\sqrt 5}{\sqrt5.\sqrt 5}=\frac{1}{\sqrt 5}\)
 one year ago

lsugano Group TitleBest ResponseYou've already chosen the best response.0
i still dont get it..><
 one year ago

hartnn Group TitleBest 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 ?
 one year ago

Asad0000 Group TitleBest ResponseYou've already chosen the best response.0
(2√5)/5 can also be written as \[\frac{ 2 }{ \sqrt{5} }\]
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
reciprocal means inversing the ratio, a/b becomes b/a
 one year ago

lsugano Group TitleBest ResponseYou've already chosen the best response.0
why is the denominator √5 multiply by √5
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
any number can be expressed as \(a=\sqrt a.\sqrt a\)
 one year ago

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

lsugano Group TitleBest ResponseYou've already chosen the best response.0
wait basically....√5 and 5 is the same?
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
no.... 5 and \(\sqrt 5.\sqrt 5\) are same.
 one year ago

lsugano Group TitleBest ResponseYou've already chosen the best response.0
but why do we have to multply by √5??
 one year ago

lsugano Group TitleBest ResponseYou've already chosen the best response.0
OMG i think i got it!!
 one year ago

lsugano Group TitleBest ResponseYou've already chosen the best response.0
so first, the reciprocal of (2√5)/5 is 5/2√5
 one year ago

lsugano Group TitleBest ResponseYou've already chosen the best response.0
but 5 = √5 . √5
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
es, you can do that way also!
 one year ago

lsugano Group TitleBest ResponseYou've already chosen the best response.0
and √5 crosses out which equals. √5 / 2!!
 one year ago

lsugano Group TitleBest ResponseYou've already chosen the best response.0
thank you soooo much!!!! im sorry if i put some streess on you!! i am really bad at math ><
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
no problem at all :) welcome ^_^
 one year ago
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