SOLUTION: Find the real solution × to the 4th power minus 5x squared plus 4 equals zero

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Question 830859: Find the real solution × to the 4th power minus 5x squared plus 4 equals zero
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
× to the 4th power minus 5x squared plus 4 equals zero
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x^4 - 5x^2 + 4 = 0
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(x^2-4)(x^2-1) = 0
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x^2-4 = 0 or x^2-1 = 0
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x = 2 or x = -2 or x = 1 or x = -1
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Cheers,
Stan H.
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