SOLUTION: Hi - I am having some trouble understanding "higher degree polynomial equations" Can you please help me solve this, and show me how: 4x^4 - 2x^2 - 4 = 2 Thank you!!!

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Question 427846: Hi - I am having some trouble understanding "higher degree polynomial equations" Can you please help me solve this, and show me how:
4x^4 - 2x^2 - 4 = 2
Thank you!!!

Answer by richard1234(7193)   (Show Source): You can put this solution on YOUR website!
Let so our quartic equation becomes --> --> . This factors to , so either or . Substituting back into our expression for z in terms of x, we obtain
--> ,
--> , (i is the imaginary unit, equal to .

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