Square Number
If a number is multiplied by itself, the product so formed is called the square of that number.
If ‘a’ is a number then the square of a is written a2 and is given by
a2 = a x a.
Example: 3 × 3 = 9, we say that 9 is the square number of 3.
Other examples of square numbers
- 1 × 1 = 12= 1, we say that 1 is the square number of 1.
- 2 × 2 = 22= 4, we say that 4 is the square number of 2.
- 4 × 4 = 42= 16, we say that 16 is the square number of 4.
- 5 × 5 = 52= 25, we say that 25 is the square number of 5.
Thus, the square of a number is a number raised to the power 2.
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