Clan x86

General Forums => Academic / School => Math and Other Problems => Topic started by: Ender on July 11, 2007, 07:45:21 pm

Title: USAMO Problem
Post by: Ender on July 11, 2007, 07:45:21 pm

Prove that the zeros of x^5 + ax^4 + bx^3 + cx^2 + dx + e = 0 cannot all be real if 2a^2 < 5b.

Fun problem :)