Square rootFor example,_{ } is 3, because 3 x 3 = 9. Here are a few other square roots: The ^{} is 4 because 4 x 4 is 16 The ^{ } is 5 because 5 x 5 is 25 Now, here's a problem for you: What is the square root of 81? Square roots can get messy if the answer is not an integer. For example, the square root of 8 is 2.727427. . . (it keeps going on forever!). It is best to get these square roots with your calculator (the square root key: _{}) Note: There are other 'roots' other than square roots. For example a 'third root' (or 'cube root') which is represented as ∛ So the ∛27 = 3 because 3 x 3 x 3 = 27 Note: When dealing with exponents the square root of a number is that number to the ^{1}⁄_{2} power, or, using x, x^{1⁄2} So, 25^{1⁄2} = 5. |