SOLUTION: This is my last one and I can not seam to get it. Please help. w^4-6w^2-2=0

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: This is my last one and I can not seam to get it. Please help. w^4-6w^2-2=0      Log On


   

Question 340252: This is my last one and I can not seam to get it. Please help.
w^4-6w^2-2=0
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
w^4-6w^2-2=0
a=1 ; b=-6 ; c=-2
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w^2 = [6 +- sqrt(36-4(-2))]/2
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w^2 = [6 +- sqrt(44)]/2
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w^2 = [6 +- 2sqrt(11)]/2
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w^2 = 3+-sqrt(11)
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w = sqrt(3+sqrt(11)) or w = sqrt(3-sqrt(11))
==============================================
Cheers,
Stan H.