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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!

understand that i don't know the answers

will someone answer his question