How do you determine if a number is a perfect square: 15?

To determine if the number 15 is a perfect square, we need to check if there is an integer that, when multiplied by itself, equals 15.

Understanding Perfect Squares

A perfect square is a number that can be expressed as the square of an integer. For example, 1 (1x1), 4 (2x2), and 9 (3x3) are perfect squares.

Steps to Check if 15 is a Perfect Square

• Find the square root of 15, which is approximately 3.87.
• Check if this square root is an integer. Since 3.87 is not an integer, 15 cannot be a perfect square.

Conclusion

Since there is no integer that squares to give 15, we conclude that 15 is not a perfect square.