SOLUTION: How do you solve the quadratic equation 16x^2-21=0

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Question 688189: How do you solve the quadratic equation
16x^2-21=0
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
How do you solve the quadratic equation
16x^2-21=0
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Factor:
(4x-sqrt(21))(4x+sqrt(21)) = 0
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x = sqrt(21)/4 or x = -sqrt(21)/4
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Cheers,
Stan H.
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