Which of the following are TRUE?
Choose ALL the correct answers.
\sqrt((4n^(2)-n)/(n^(2)+1))=\sqrt((4-(1)/(n))/(1+(1)/(n^(2))))
\sqrt((4n^(2)-n)/(n^(2)+1))=(2n-\sqrt(n))/(n+1)
\sqrt((4n^(2)-n)/(n^(2)+1))=(\sqrt(4n^(2)-n))/(\sqrt(n^(2)+1))
\sqrt((4n^(2)-n)/(n^(2)+1))=\sqrt(4-n)