Question 1119639
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*[tex \LARGE \ \ \ \ \ \ \ \ \ \  r^2\ =\ 7]


*[tex \LARGE \ \ \ \ \ \ \ \ \ \  r\ =\ \sqrt{7}]


*[tex \LARGE \ \ \ \ \ \ \ \ \ \  a,\ a\sqrt{7},\ 7a]


*[tex \LARGE \ \ \ \ \ \ \ \ \ \  2a\ +\ 15\ =\ a\sqrt{7}]


*[tex \LARGE \ \ \ \ \ \ \ \ \ \  a\ =\ \frac{15}{\sqrt{7}\,-\,2}\ =\ 10\ +\ 5\sqrt{7}]


The Sequence:


*[tex \LARGE \ \ \ \ \ \ \ \ \ \  10\ +\ 5\sqrt{7},\ 35\ +\ 10\sqrt{7},\ 70\ +\ 35\sqrt{7}]
								
								
John
*[tex \LARGE e^{i\pi}\ +\ 1\ =\ 0]
My calculator said it, I believe it, that settles it
<img src="http://c0rk.blogs.com/gr0undzer0/darwin-fish.jpg">
*[tex \Large \ \
*[tex \LARGE \ \ \ \ \ \ \ \ \ \  
								
{{n}\choose{r}}

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