Question 1122672
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The first term of the trinomial must be the result of squaring the first term of the binomial.  So what would you need to square to come up with *[tex \Large 9b^2]?  Once you have that, you just do the FOIL process to get the rest of it.
								
								
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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