Question

define perfect square

Answer 1

perfect square is a number that can be expressed as the product of two equal integers.

Examples of perfect squares

9
9 is a perfect square because it can be expressed as 3 * 3 (the product of two equal integers)
16
16 is a perfect square because it can be expressed as 4 * 4 (the product of two equal integers)
25
25 is a perfect square because it can be expressed as 5 * 5 (the product of two equal integers).. Hope it helps you

Answer 2

a number which can be expressed as product of 2 equal numbers