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Line 73:
Line 73: + +
→redundant +/-?
:::It's a matter of notation. <math>\sqrt{x}</math> refers only to the positive square root, while <math>-\sqrt{x}</math> refers only to the negative square root. If we are describing both square roots, the +/- is required. [[User:Scriabin|Scriabin]] 15:15, 24 April 2007 (EDT)
:::It's a matter of notation. <math>\sqrt{x}</math> refers only to the positive square root, while <math>-\sqrt{x}</math> refers only to the negative square root. If we are describing both square roots, the +/- is required. [[User:Scriabin|Scriabin]] 15:15, 24 April 2007 (EDT)
::::Correct, but we only need the +/- on the right hand side of the example equation. Right? I'd fix it, but that would amount to revert warring rather than consensus. [[User:Human|Human]] 16:53, 24 April 2007 (EDT)
== negative numbers ==
== negative numbers ==