trinityxzamorap0hvn0
trinityxzamorap0hvn0
12-12-2017
Mathematics
contestada
please help..........
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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