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  • 11-09-2017
  • Mathematics
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kphung76127
kphung76127 kphung76127
  • 11-09-2017
x^2-8x+16= 3+16
x^2-8x+16=19

(x-4)^2= 19
x-4= ±√19
x= 4±√19

Final answer: A
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