81 to the 3/4 I know the answer is 27 but how

and

express square root of 2 over square root of 2 + 1 in the form a+bsquare root2, where a and b are integers

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- September 22nd 2008, 12:54 PMmathsfoolhelp please its gobledegook
81 to the 3/4 I know the answer is 27 but how

and

express square root of 2 over square root of 2 + 1 in the form a+bsquare root2, where a and b are integers - September 22nd 2008, 12:59 PMearboth
- September 22nd 2008, 01:03 PMearboth