SOLUTION: f(x)=2x to the 4th power - 6x squared - 5 Find x if f(x)= 15

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Question 370621: f(x)=2x to the 4th power - 6x squared - 5
Find x if f(x)= 15

Answer by nyc_function(2741) About Me  (Show Source):
You can put this solution on YOUR website!
f(x) = 2x^4 - 6x^2 - 5

Replace f(x) with 15 and factor.

15 = 2x^4 - 6x^2 - 5

Can you finish now?