Homonym: √ (Checkmark)
The symbol "√" represents the mathematical operation known as the square root. It indicates a number that, when multiplied by itself, gives the original number. For example, √9 equals 3, since 3 × 3 = 9. Square roots are commonly used in various fields, including mathematics, physics, and engineering.
In mathematics, the square root can be applied to both perfect squares, like 16 (where √16 = 4), and non-perfect squares, such as 2 (where √2 is approximately 1.41). The square root is also important in solving equations and understanding concepts like Pythagorean theorem and quadratic equations.