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OpenStudy (anonymous):
x2-2x-1=0
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OpenStudy (anonymous):
(x-1)(x-1)=0 so x equals 1
OpenStudy (anonymous):
you could use the quadratic formula........
OpenStudy (anonymous):
\[x = \frac{ -b \pm \sqrt{b^2 - 4ac} }{ 2a }\]
OpenStudy (anonymous):
|dw:1367329016016:dw|
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