AnnieDirges
AnnieDirges
28-04-2017
Mathematics
contestada
Factor this quadratic equation: x^2-2x-1
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akaleti47
akaleti47
28-04-2017
[tex] x^{2} -2X-1= (x-1)^{2}-2 [/tex]
[tex]= (x-1)^{2} - \sqrt{2} ^{2}= (x-1+ \sqrt{2} )(x-1- \sqrt{2} )[/tex]
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