SOLUTION: I need to solve the following equation by factoring: x^4-2x^2-3=0

Question 720087: I need to solve the following equation by factoring:
x^4-2x^2-3=0
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!

Choose some variable, anything, v. Let . Now solve first for . Can you factor the left member?

. What more should you do?
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