What is the value of √4. Is it +- 2 or only +2?

My answer to What is the value of √4. Is it +- 2 or only +2?

Answer by Shaunak Agastya Vyas:

The value of sqrt(4) is 2 only.

if x^2 = 4 then x = +2 or x = -2

What is the value of √4. Is it +- 2 or only +2?

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