it's the square root of 9, which is 3.
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sqrt stand for Square Root. It's called SQUARE root because they make perfect squares. For example, 9, will make a perfect square when there are 3 to each side. 3 is the square root of 9 because 3 x 3=9. In simplier terms, 3 SQUARED, or 3x3, is nine.
3
3
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√9 = 3, because 3² = 3*3 = 9
±√9 = ±3, because (-3)² = 9 and also 3² = 9
±√9 = ±3, because (-3)² = 9 and also 3² = 9
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It's the positive number which gives you 9 when it is squared.
In other words, 3.
In other words, 3.
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3 or -3. Because both when squared gives you 9.
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3.
3 X 3=9
3 X 3=9