i was solving a calculus problem and i yielded the answers 1/sqrt(5) and 2/sqrt(5). when i looked at the solution in the book it showed the answer as (1/5)*sqrt(5) and (2/5)*sqrt(5). I checked it with my calculator and it shows that my answers and the book's answers are equal, but I cannot figure out how to transform 1/sqrt(5) and 2/sqrt(5) to look like (1/5)*sqrt(5) and (2/5)*sqrt(5). Can anyone show me how to do this? Also what is a better way for me to express the numbers here on this forum?