Square Roots

Squaring is the function used when we multiply a number by itself.  We use the term square root for the number that was used to make the square.  The radical sign (√) is used to represent square root.

Since base2 = square,

√square = base

 

The "Sq Root Practice" in the flash object above should help you understand the following chart:

Rational Number Principal Square Root Negative Square Root
1 1 -1
4 2 -2
9 3 -3
16 4 -4
25 5 -5
36 6 -6

Principal Square Root Flashcards
 
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