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• 15:33, 1 December 2015 Sheriff (talk | contribs) deleted page Problem 2 (content was: "==1983 USAMO Problem 2== Show that the five roots of the quintic <cmath>x^5+ax^4+bx^3+cx^2+dx+e=0</cmath> cannot all be real if <math>2a^2<5b</math>. Solution {{delete|page for this problem already 1983_USAMO_Problems/Problem ...")
• 14:08, 5 July 2011 Azjps (talk | contribs) deleted page Problem 2 (Housekeeping: content before blanking was: "== Problem == Let <math>ABC</math> be a triangle, and draw isosceles triangles <math>BCD, CAE, ABF</math> externally to <math>ABC</math>, with <math>BC, CA, AB</math> as their respective bases. Prove that the li)