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OpenStudy (anonymous):
completing the square x^2-4x+1=0
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OpenStudy (anonymous):
pls
OpenStudy (anonymous):
x^2-4x+1=0 x^2-4x+4-3=0 (x^2-4x+4)=3 (x-2)^2=3 (x-2)=+- sqrt{3} x=2+-sqrt(3)
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