Imagine a square where you know the area. If the area is 25, the side length is 5. This '5' is the square root of 25.
We use β to represent square roots. β25 = 5.
Both 5 and -5 squared equal 25. Usually, β25 refers to the positive root (5).
Some square roots, like β2, are decimals that cannot be expressed as fractions (approx. 1.414...).
Let's test your square root skills!