Answer: As for example the square root of 16 is -4 or +4 because -4 times -4 = 16 and 4 times 4 = 16
Answer: There are two "answers", because there are two numbers which, when squared, give you a specified number. The reason for this is that the square function is not monotonic - this results in complications when determining the inverse function. For more details, read about "monotonic function", for example in the Wikipedia.
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The square root of six divided by the square root of two equals the square root of three.
5 times the square root of two over 3 times the square root of two equals 5/3
The square root of 36 and the square root of 49.
Square root 64 and square root 81
-1,0,or 1 the negative square root of four is negative two and the square root of four is two