Question 987028
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The process is called "Rationalizing the Denominator"


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ \frac{27}{\sqrt{3}}\ =\ \left(\frac{27}{\sqrt{3}}\right)\left(\frac{\sqrt{3}}{\sqrt{3}}\right)]


You can do this because anything divided by itself is one and anything multiplied by one is unchanged.


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ \frac{27}{\sqrt{3}}\ =\ \left(\frac{27}{\sqrt{3}}\right)\left(\frac{\sqrt{3}}{\sqrt{3}}\right)\ =\ \frac{27\sqrt{3}}{3}\ =\ 9\sqrt{3}]


John
*[tex \LARGE e^{i\pi}\ +\ 1\ =\ 0]
My calculator said it, I believe it, that settles it

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*[tex \LARGE \ \ \ \ \ \ \ \ \ \