Posted by Eric on Thursday, September 18, 2008 at 9:10pm.
A radical is a number under a "root" sign. It can be a square root or some other higher root such as cube root.
A mixed root is the product of and integer and a radical
The square root of a number (A) is the number B such that, when B is multiplied by itself, yields the number A
A perfect square (in number theory) can be expressed as the producy of the same integer times itself. 25 = 5 x 5 is an example.
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