SOLUTION: how can I show my work for the problem x4+7x2=18
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Question 693942: how can I show my work for the problem x4+7x2=18
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
how can I show my work for the problem x4+7x2=18
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x^4 + 7x^2 - 18 = 0
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(x^2+9)(x^2-2) = 0
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x = +/-3i or x = +-isqrt(2)
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Cheers,
Stan H.
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