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→This is really a usage question
P. S. No time to look further into this now, but two other relevant sources would be some reasonably popular current algebra textbook, and... I really think this is worth looking into... the State of Massachusetts releases the test questions and answers used on the standardized tests required for high-school graduation, and there's various curriculum stuff available, and I know I saw that New Jersey and probably numerous other states do something similar. I'll betcha a nickel that there's a test question about this somewhere, and it is probably possible to say "If the State of Massachusetts asks you about this, the answer that will be scored correct is thus-and-such..." [[User:Dpbsmith|Dpbsmith]] 16:26, 24 April 2007 (EDT)
P. S. No time to look further into this now, but two other relevant sources would be some reasonably popular current algebra textbook, and... I really think this is worth looking into... the State of Massachusetts releases the test questions and answers used on the standardized tests required for high-school graduation, and there's various curriculum stuff available, and I know I saw that New Jersey and probably numerous other states do something similar. I'll betcha a nickel that there's a test question about this somewhere, and it is probably possible to say "If the State of Massachusetts asks you about this, the answer that will be scored correct is thus-and-such..." [[User:Dpbsmith|Dpbsmith]] 16:26, 24 April 2007 (EDT)
:After struggling through some of the math coding, I think I have clarified the article by defining the radical symbol as the principal square root only, while making it more clear that there are two square roots.