Example:
The square root of 25 is 5, because 5 × 5 = 25
The square root of 81 is 9, because 9 × 9 = 81
Not every number has a clean square root. For example, the square root of 20 is 4.472, a decimal.
Here’s the basic formula to find the square root of a number:
√x = y → where y × y = x
Example:
If x = 36,
Then √36 = 6 → because 6 × 6 = 36