SOLUTION: x^4-11x^2+18=0

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Question 1108979: x^4-11x^2+18=0
Found 3 solutions by stanbon, josgarithmetic, ikleyn:
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
x^4-11x^2+18=0
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Factor::
(x^2-9)(x^2-2) = 0
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Ans:: x = +/-3 or x = +/-sqrt(2)
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Cheers,
Stan H.
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Answer by josgarithmetic(39618) About Me  (Show Source):
You can put this solution on YOUR website!
%28x%5E2%29%5E2-11%28x%5E2%29%2B18=0

%28%28x%5E2%29-2%29%28%28x%5E2%29-9%29=0



If x%5E2-2=0, then x=0%2B-+sqrt%282%29.

If x%5E2-9=0, then x=0%2B-+3.

Answer by ikleyn(52791) About Me  (Show Source):
You can put this solution on YOUR website!
.
The Stanbon's solution and answer are correct.


Those by  @josgarithmetic are  W R O N G.