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CBSE - IX - Mathematics - Number System

The square root of 4 is 2 i.e. 2x2=4. But the square root of 4 can also be -2 i.e. -2x-2=4. Therefore, the square root of 4 can be 2. Then why do we have to write square root of 4=2 but not -2 or 2.

Asked by 21st July 2012, 11:30 AM
Answered by Expert

Answer:

Square root of 4 is actually 2.
Answered by Expert 22nd July 2012, 8:49 PM

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