SOLUTION: Hello my name is ChristopherI am hoping you can help me on this HW problem...
Solve equation by putting in quadratic form (Use a U substitution)....?
Very confused could you
Question 439522: Hello my name is ChristopherI am hoping you can help me on this HW problem...
Solve equation by putting in quadratic form (Use a U substitution)....?
Very confused could you please help me ? thankyou
4x^4-7x^2+3=0 Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! Solve equation by putting in quadratic form (Use a U substitution)....?
Very confused could you please help me ? thankyou
4x^4-7x^2+3=0
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Let u = x^2
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Substitute to get:
4u^2-7u+3 = 0
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Factor:
4u^2 -4u-3u + 3 = 0
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4u(u-1)-3(u-1) = 0
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Factor Again:
(u-1)(4u-3) = 0
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u = 1 or u = 4/3
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Convert answer to "x":
x^2 = 1 or x^2 = 4/3
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x = +-1 or x = +-2/sqrt(3)
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Cheers,
Stan H.
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