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Roots

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In this video I define the square root of a non-negative number and the principal square root of a non-negative number. We give some examples and discuss roots of even indices and roots of odd indices, the concepts of radical, index and radicand. Next, we talk about properties of radicals and do some exercises of simplification of radicals. Check my second video about roots here: http://bit.ly/2hA2bqU