Question 288289
I need to complete the square: 2x^2+10x-3 =0
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2x^2 + 10x = 3
2(x^2 + 5x + ? = 3 + 2*?
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2(x^2 + 5x + (5/2)^2) = 3 + 2(5/2)^2
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2(x+(5/2))^2 = 3 + 25/2
2(x+(5/2))^2 = 31/2
(x+(5/2))^2 = 31/4
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x+(5/2) = +-sqrt(31)/2
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x = [-5+-sqrt(31)]/2

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I'm not sure where you got your "answers"
but they are wrong.
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Cheers,
Stan H.
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