SOLUTION: w^4-18w^2-2=0 What is the solution?

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Question 236542: w^4-18w^2-2=0
What is the solution?
Answer by checkley77(12569) About Me  (Show Source):
You can put this solution on YOUR website!
w^4-18w^2-2=0
w+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+
w=(18+-sqrt[-18^2-4*1*-2])/2*1
w=(18+-sqrt[324+8])/2
w=(18+-sqrt332)/2
w=(18+-18.22)/2
w=36.22)/2
w=18.11 ans.
w=(18-18.22)/2
w=-.22/2
w=-.11 ans.