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Solve the quadratic equation by factoring. 5x2 - 8 = 39x
5x^2 - 8 = 39x; 5x^2 - 39x - 8 = 0; (5x + 1)(x - 8) = 0; 5x + 1 = 0; 5x = -1; x = -1/5; x - 8 = 0; x = 8 x = -1/5 or x = 8
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User: Solve the quadratic equation by factoring. 5x2 - 8 = 39x

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Asked 12/4/2012 12:57:30 PM
Updated 186 days ago|8/30/2014 6:22:45 PM
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Flagged by andrewpallarca [8/30/2014 6:22:38 PM]
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5x^2 - 8 = 39x;
5x^2 - 39x - 8 = 0;
(5x + 1)(x - 8) = 0;
5x + 1 = 0; 5x = -1; x = -1/5;
x - 8 = 0; x = 8

x = -1/5 or x = 8
Added 186 days ago|8/30/2014 6:22:45 PM
This answer has been confirmed as correct, not copied, and helpful.
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