Posted by Julie on Tuesday, May 24, 2011 at 4:58pm.
w^4-6w^2-2=0 (w²)^2;-6(w²)-2 = 0 put x=w² x^2-6x-2=0 Apply the quadratic formula: x=(6±√(36+8))/2 =3±√(11) Therefore w=±√(3±√(11)) (for a total of 4 solutions)