The square root of a number is another number which can be multiplied by itself, or squared, to equal the number Square roots can be positive or negative Remember two negatives are a positive So, the square root of 4 is both +2 and -2 Roots are the inverse or opposite of powers 32, or 3 squared, or 3 x 3 = 9 So, the square root of 9 = 3 The square root of a number is, strictly speaking, + or - A negative multiplied by a negative is a positive In some problems recording the root as + or - is essential See also cube roots
The square root of a number is a number which multiplied by itself, gives you the original number Its symbol is called a radical and looks like this: For 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 36?
a number of quantity which when squared, or multiplied by itself will produce a given number of quantity; as 4 is the square root of 16 Its symbol is x2
The root of an expression is the term that when multiplied by itself produces the expression, for example: 5 is the square root of 25; x is the square root of x2