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→+/- notation deleted?
::: No, it cannot be said either way. It does not help to have two contradictory definitions of the square root sign. [[User:RSchlafly|RSchlafly]] 14:35, 24 April 2007 (EDT)
::: No, it cannot be said either way. It does not help to have two contradictory definitions of the square root sign. [[User:RSchlafly|RSchlafly]] 14:35, 24 April 2007 (EDT)
::::OK, so define it as the positive root, but point out that there are a pair of numbers that can be squared to produce any given number, and that is shown by our little formula, and is necessary to preserve multiple solutions of equations when taking the square root of each side? Using the Wolfram cite below to define it?
Wolfram says:
Wolfram says: