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What is the square root of 4?

The square root of 4 is 2.

  • Definition: The <a href="https://www.wikiwhat.page/kavramlar/square%20root">square root</a> of a number 'x' is a value 'y' such that y² = x.

  • Principal Square Root: The principal (or positive) square root of 4 is 2, because 2 * 2 = 4.

  • Negative Square Root: While 2 is the principal square root, -2 is also a square root since (-2) * (-2) = 4. However, when we talk about "the square root," we generally mean the principal (positive) one.

  • Symbol: The symbol for square root is √. So, √4 = 2.

  • Rational Number: The square root of 4 is a <a href="https://www.wikiwhat.page/kavramlar/rational%20number">rational number</a> because it can be expressed as a fraction (2/1).

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