Is reading a book that is 1400 pages he will read the same number of pages each day if he reads the book in 7 days how many page
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and is all you can simplify from it.
so... all we did, was rationaliize it, namely, "getting rid of the pesky radical at the bottom", we do so by simply multiplying it by something that will raise the radicand, to the same degree as the root, thus the radicand comes out.