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Restricting the discussion to real numbers for now. In this case, the square root is only defined for non-negative numbers; the principal square root of a positive number is the POSITIVE square root. For example, both +5 and -5 are square roots of 25, since both - when squared - give you 25. But the positive square root (+5) is called the principal square root, and if you write the square root symbol, that's the number usually meant.

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Alden Kling

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3y ago

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That depends upon the value of X. The square root of any number (X) is a factor of that number that, when multiplied by itself, yields the number. For example, 3 is a factor of 9 that when multiplied by itself (3 x 3) yields 9. We say, therefore, that the square root of 9 is 3.

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Wiki User

16y ago
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Whenever you take the square root of a negative number, you get an imaginary number in addition to the other terms.

eg:

√-1 = i

√-2 = =

√-(1)(2) =

i

√2

√-100 = 10i


So the square root of -x is:

√-x =

√(-1)(x) = i

√x

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Wiki User

11y ago
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Q: What is the square root of X?
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