There are two numbers which can be the square root of 4. However, let us first recall what it means for a number x to be the square root of a number k.

It means that if you square x you will get k.

In the case of 4, we can easily see that if we square 2 we will get 4, so 2 must be a square root. However, if we square -2, we can immediately see that we also get 4, Aha! so -2 must also be a square root of 4.

Hello,

A square root of a number is a number, that when mulitplied by itself, equals the first number. An example is the square root of 49, which is 7, because 7*7=49. To answer your question, the square root of 4 is 2, because 2*2=4. Hope I helped!

It's 2 and -2.

However, by convention, 2 is normally the only answer given (ie 'square root' is often taken to be 'positive square root' by default).

The square root is the opposite of squaring something. So, 2x2 or 2^2 = 4. so sqrt(4) = 2.

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