SOLUTION: what is the solution set for the 9x^4-8x^2-1=0

Question 1045134: what is the solution set for the 9x^4-8x^2-1=0
Answer by ikleyn(52832) (Show Source): You can put this solution on YOUR website!
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what is the solution set for the 9x^4-8x^2-1=0
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 = .

Factor the left side

 = .


The equation deploys in two independent equations


1.   = .  It has no real solutions (it has complex solutions  = +/-, if you know complex numbers) 


2.   = .   It has two solutions  x = 1  and  x = -1.

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