SQUARE ROOTS

MATH

Square root
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RADICALS
The square root of a positive number x is the number that, when squared, equals x.

For example:

The square root of 16 equals 4 because 4 × 4 = 16.
The square root of 9 equals 3 because 3 × 3 = 9.
The square root of 4 equals 2 because 2 × 2 = 4.

The symbol for a positive square root is √, also called a radical.

√16=4
√9=3