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itsjustme_lol Group TitleBest ResponseYou've already chosen the best response.0
simplify the expression
 2 years ago

frx Group TitleBest ResponseYou've already chosen the best response.0
Ok so start by rewrite \[\sqrt{10}=i \sqrt{10}\]
 2 years ago

itsjustme_lol Group TitleBest ResponseYou've already chosen the best response.0
ok, im following
 2 years ago

frx Group TitleBest ResponseYou've already chosen the best response.0
Do you get that idea?
 2 years ago

itsjustme_lol Group TitleBest ResponseYou've already chosen the best response.0
yes I understand that i believe
 2 years ago

frx Group TitleBest ResponseYou've already chosen the best response.0
Do the same with sqrt(5)
 2 years ago

frx Group TitleBest ResponseYou've already chosen the best response.0
Then distribute
 2 years ago

itsjustme_lol Group TitleBest ResponseYou've already chosen the best response.0
ok so its i\[\sqrt{5}\]
 2 years ago

itsjustme_lol Group TitleBest ResponseYou've already chosen the best response.0
hang on
 2 years ago

itsjustme_lol Group TitleBest ResponseYou've already chosen the best response.0
dw:1355782789409:dw
 2 years ago

frx Group TitleBest ResponseYou've already chosen the best response.0
Not really, the reason for why you take out the i is that you want the minus under the squareroot to disappear
 2 years ago

frx Group TitleBest ResponseYou've already chosen the best response.0
Do you know the definition of i?
 2 years ago

frx Group TitleBest ResponseYou've already chosen the best response.0
\[i=\sqrt{1}\] \[i ^{2}=1\]
 2 years ago

itsjustme_lol Group TitleBest ResponseYou've already chosen the best response.0
well i know that i means the y on a plane and it is the imaginary part?
 2 years ago

frx Group TitleBest ResponseYou've already chosen the best response.0
That's also, kind of, correct when dealing with imaginary numbers the YX plane is called ImRe
 2 years ago

frx Group TitleBest ResponseYou've already chosen the best response.0
So based on the definition of \[i=\sqrt{1}\] what's, for example \[\sqrt{7}\]
 2 years ago

frx Group TitleBest ResponseYou've already chosen the best response.0
\[i \sqrt{10}(11+i \sqrt{5})\]=\[11i \sqrt{10}+i ^{2}\sqrt{10}\sqrt{5}= 11i \sqrt{10}\sqrt{50}\]
 2 years ago
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