SOLUTION: My son recently took a test an had the following question wrong: 3x^2 - 4 = 0 That's 3 "x" squared. He was require to provide the solution and the correct answer is: +/-

Question 404390: My son recently took a test an had the following question wrong:
3x^2 - 4 = 0 That's 3 "x" squared. He was require to provide the solution and the correct answer is: +/- 2 times the square root of 3 divided by 3
How does one come upon that answer? He is having difficulty trying to find out how to begin
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
3x^2 - 4 = 0
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3x^2 = 4
--
x^2 = 4/3
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x = +/-(2/sqrt(3))
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Rationalizing the denominator you get:
x = +/- (2sqrt(3))/3
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OR you could write it as:
x = (2/3)sqrt(3) or x = (-2/3)sqrt(3)
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Cheers,
Stan H.
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