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The square root of four |
2002-04-13 |
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Frank pose la question :
In a recent quiz we where asked the square root of four. The quizmaster gave the answer as not only 2 but also -2. Being pedantic I queried this. Although -2 squared is 4, does it follow that the root of 4 is -2 Can you enlighten us?
Claude Tardif and Penny Nom lui répond. |
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