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OpenStudy (anonymous):
A root of x2 – 5x – 1 = 0 is
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OpenStudy (anonymous):
Can be solved by completing the square. x^2 - 5x - 1 = 0 x^2 - 5x = 1 x^2 - 5x + (-5/2)^2 = 1 + (-5/2)^2 (x - 5/2)^2 = 29/4 sqrt[(x - 5/2)^2] = sqrt (29/4) x - 5/2 = [sqrt(29)]/2 x = 5/2 +- [sqrt(29)]/2 x = [5 +- sqrt (29)]/2
OpenStudy (midhun.madhu1987):
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