McGraw Hill Glencoe Algebra 1, 2012
MH
McGraw Hill Glencoe Algebra 1, 2012 View details
3. Operations with Radical Expressions
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Exercise 30 Page 638

Before we can combine any like terms, we need to rationalize the denominators of the terms. At first we can rewrite every radical in the quotient as a quotient of two radicals.
Now, we can rationalize the denominators of these quotients. Since there is already a perfect square under the radicand in the denominator of the first term, we will simplify it at once.