What is the definition of a square root

The video tutorial explains the concept of square roots, starting with the definition and symbols like the radical symbol and radicand. It discusses how square roots relate to squaring numbers, using examples such as sqrt 25 and sqrt 81 to illustrate perfect squares. The tutorial also covers the concept of approximating square roots for non-perfect squares, highlighting that these result in irrational numbers. The overall aim is to help viewers understand what a square root represents and how to work with both perfect and non-perfect squares.

What is the significance of the radicand in a square root expression?

How do you determine if a number is a perfect square?