Square roots" redirects here. For the music festival, see Square Roots. For the documentary, see Square Roots: The Story of SpongeBob SquarePants.
The mathematical expression 'The square root of x"
In mathematics, a square root of a number a is a number y such that y2 = a, in other words, a number y whose square (the result of multiplying the number by itself, or y × y) is a. For example, 4 and −4 are square roots of 16 because 42 = (−4)2 = 16.