A perfect square is the result of squaring a number. In other words the square root of a number is a perfect square.
Perfect Squares:
√81 = 9^2
√9 = 3^2
√25 = 5^2
√100 = 10^2
√4 = 2^2
√36 = 6^2
All these numbers are perfect squares because when they are multiplied by a number twice it equals the root.
Non-perfect squares:
√2
√5
√7
√8
√10
All these numbers are not perfect squares because when they are multiplied by a number twice it's not rational.
Hope This Helped! Good Luck!
