Are you talking about negative powers.
Perfect Square
What are the integers between 0 and 100 whose positive square roots are integers?
a perfect square
It is a perfect square.
It is a perfect square.
Such a number is called a "perfect square".
The two square roots of integers that can be associated with π (pi) are 0 and 1. The square root of 0 is 0, while the square root of 1 is 1. These values are significant because they represent the fundamental square roots of integers, and while π itself is an irrational number, these square roots are foundational in mathematics.
perfect square
All of the integers between 20 and 30 are square roots.
You call them principal square roots.
Such a number is called a "perfect square".
A factor tree has factors, not square roots - unless they are integers.