29 January 2012

• 20:3320:33, 29 January 2012 diff hist +40 2006 AMC 12B Problems/Problem 15 →Solution 2
• 20:2620:26, 29 January 2012 diff hist +506 2006 AMC 12B Problems/Problem 15 Another solution , PLEASE edit as I am not sure how to make this clear, and please change to LaTeX. I tried to do it in LaTeX and I'm still new to the software.