A number that can be produced by multiplying an integer by itself is known as a perfect square. For example, the number 9 can be produced by multiplying the positive integer 3 by itself: (3x3)=9. The number 12, however, cannot be produced this way, so it is not a perfect square.
Are the following numbers perfect squares?
4 = (2 x 2) = 2^(2)
25 = (5 x 5) = 5^(2)
50 = not a perfect square