sj481
sj481
30-11-2014
Mathematics
contestada
Can anyone please teach me how to work out x2-8x+19?
Respuesta :
konrad509
konrad509
30-11-2014
[tex]x^2-8x+19=\\ x^2-8x+16+3=\\ (x-4)^2+3\\\\ (x-4)^2+3=0\\ (x-4)^2=-3\\ x\in \emptyset[/tex]
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