trinityxzamorap0hvn0 trinityxzamorap0hvn0
  • 12-12-2017
  • Mathematics
contestada

please help..........

please help class=

Respuesta :

matthewe1903 matthewe1903
  • 13-12-2017
1.
x^2-14x+45=0
(14/2)^2 =49
x^2-14x+49 +45=49
                    -45  -45
x^2-14x+49=4
(x-7)^2=4        square both sides
x-7=2         add 7 to both sides
x=9

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