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hartnn Group TitleBest ResponseYou've already chosen the best response.2
hint : \((x1)=(\sqrt x)^21^2 \) now use the difference of squares \(a^2b^2=(a+b)(ab)\)
 one year ago

onegirl Group TitleBest ResponseYou've already chosen the best response.1
how do i do that?
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.2
\((x1)=(\sqrt x)^21^2=(\sqrt x1)(\sqrt x+1)\) got this ? what gets cancelled ?
 one year ago

onegirl Group TitleBest ResponseYou've already chosen the best response.1
okay the sqrt(x)  1 gets cancelled
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.2
yes, you can directly put x=1 now.
 one year ago

onegirl Group TitleBest ResponseYou've already chosen the best response.1
okay so i substitute x = 1 into sqrt(x)  1?
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.2
no....that got cancelled....what remains ?
 one year ago

onegirl Group TitleBest ResponseYou've already chosen the best response.1
what remains is (x  1)
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.2
but we wrote x1 as \((x1)=(\sqrt x)^21^2=(\sqrt x1)(\sqrt x+1)\)
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.2
\(\dfrac{\sqrt x1}{x1}=\dfrac{\sqrt{x}1}{(\sqrt x1 )(\sqrt x +1)}=\dfrac{1}{\sqrt x+1}\) got this ? now put x=1
 one year ago

onegirl Group TitleBest ResponseYou've already chosen the best response.1
ok i get 1/2
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.2
i get the same, its correct.
 one year ago

onegirl Group TitleBest ResponseYou've already chosen the best response.1
ok i get 1/2
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.2
yes, 1/2 is correct.
 one year ago
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