The square root is the inverse of squaring a number. When we square a number we multiply the number by itself. 4 squared is , which equals 16. 16 is a perfect square, and 4 is the square root of 16. Not all numbers will have a nice whole number square root. For example, a number like 50 is not a perfect square because it does not have an integer square root. There is no way to multiply an integer by itself to create a product of 50. 50 does not have an integer square root, but 49 does. The square root of 49 is 7 because equals 49. 49 is considered the perfect square, and 7 is considered the square root. The radical symbol is used to notate square roots. For example, the square root of 49 is expressed as :. This is read as “the square root of 49 equals 7”.