SOLUTION: How do I go about solving this equation x^4 � 3x^2 + 2 = 0 when I can't use the formula ax^2+bx+c=0 because the degree is 4?

SOLUTION: How do I go about solving this equation x^4 � 3x^2 + 2 = 0 when I can't use the formula ax^2+bx+c=0 because the degree is 4?

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Question 122023: How do I go about solving this equation x^4 � 3x^2 + 2 = 0 when I can't use the formula ax^2+bx+c=0 because the degree is 4?
Answer by Earlsdon(6294) (Show Source): You can put this solution on YOUR website!
Try this:
Replace with y.
becomes:
Solve by factoring:
Apply the zero product principle:
or so then...
or
Now replace the y with
or Take the square root of these:
, , ,
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