SOLUTION: Ok I got another question; why doesnt sqrt(5)+1 over sqrt(5)-1= 2+sqrt(5) over 2??

Algebra ->  Square-cubic-other-roots -> SOLUTION: Ok I got another question; why doesnt sqrt(5)+1 over sqrt(5)-1= 2+sqrt(5) over 2??      Log On


   

Question 186788: Ok I got another question; why doesnt sqrt(5)+1 over sqrt(5)-1= 2+sqrt(5) over 2??
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Your answer is close
%28sqrt%285%29+%2B+1%29+%2F+%28sqrt%285%29+-+1%29
Multiply top and bottom by sqrt%285%29+%2B+1

%285+%2B+2%2Asqrt%285%29+%2B+1%29+%2F+4
%286+%2B+2%2Asqrt%285%29%29+%2F+4
%283+%2B+sqrt%285%29%29+%2F+2 answer
You can check the answer by setting
it equal to the original expression
and do the algebra to see if it's true