what does it mean if a number is not a perfect square? give one example that is a perfect square and one that is not.
A perfect square is a number that has a rational number as its square root.
If it doesn't, then it is not a perfect square.
perfect square: √144= 12 , √21.16 = 4.6, √(81/289) = 9/17
non-perfect squares: √3, √1.5, √(5/7),