SOLUTION: sqrt20/5 - 1/sqrt5 Simplify. Thank you!!!!

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Question 106270: sqrt20/5 - 1/sqrt5
Simplify.
Thank you!!!!
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!
sqrt%2820%2F5%29+-+1%2Fsqrt%285%29
sqrt%2820%29%2Fsqrt%285%29+-+1%2Fsqrt%285%29 .......sqrt%2820%29 we can write as sqrt%284%2A5%29+=+2+sqrt%285%29
2sqrt%285%29%2Fsqrt%285%29+-+1%2Fsqrt%285%29 ..............eliminate sqrt%285%29in first term, and we will have
2+-+1%2Fsqrt%285%29...........common denominator is sqrt%285%29
%282sqrt%285%29-1%29%2Fsqrt%285%29
since sqrt%285%29+=+2.24, we will have
%282%2A2.24-1%29%2F2.24
%282%2A%282.24%29-1%29%2F2.24
%284.48-1%29%2F2.24
3.48%2F2.24
1.4