SOLUTION: Solve.
9x^4-18x^2+5=0
Simplify your answer. Type an exact answer,using radicals as needed. Rationalize all denominators.
Thank you!
Algebra ->
Radicals
-> SOLUTION: Solve.
9x^4-18x^2+5=0
Simplify your answer. Type an exact answer,using radicals as needed. Rationalize all denominators.
Thank you!
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Question 308585: Solve.
9x^4-18x^2+5=0
Simplify your answer. Type an exact answer,using radicals as needed. Rationalize all denominators.
Thank you! Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! Solve.
9x^4-18x^2+5=0
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Factor:
9x^4 - 15x^2 - 3x^2 + 5 = 0
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3x^2(3x^2-5)-(3x^2-5) = 0
(3x^2-5)(3x^2-1) = 0
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x = +-sqrt(5/3) or x = +- sqrt(1/3)
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x = +-(1/3)sqrt(15) or x = +-(1/3)sqrt(3)
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Cheers,
Stan H.
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