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Old 05-12-2009, 08:32 AM
bas_I_am
vision
 
Join Date: Jun 2005
Location: living on a psychedelic pig farm
Posts: 514
Re: anyone good at algebra?
Quote:
Originally Posted by Jan View Post
How would you solve something like this?
x^4 + p * x^2 + q = 0
x^4 + p * x^2 + q = (x²)² + px² + q = 0

let y = x² y² + py + q, and apply quadratic formula
with D = p² + 4q y = (-p ± √D)/2 x = √((-p ± √D)/2)