Question 246787
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I presume you mean:


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ \frac{5}{3-\sqrt{2}}]


If that is the case, see my lesson on rationalizing denominators (just paste the following link into your browser):


http://www.algebra.com/algebra/homework/Radicals/rationalizingdenominators1.lesson


One more thing:  Please use parentheses to make the meaning of your post clear.  To the extent that I guessed your meaning correctly, you should have written it thus:


5/(3-sqrt(2))


John
*[tex \LARGE e^{i\pi} + 1 = 0]
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