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ANNESSANTOS1
@ANNESSANTOS1
May 2019
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Resolva esta equação do 2° grau.
-x²+6x+8=0
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nataliacellos
A= -1
b=+6
c=+8
x= -(6) +- raiz quadrada de 68
_______________________
2× (-1)
x1= -6 - 8,24 -14,24
______ = _____ = 12,24
-2 -2
x2 = -6 +8,24 +2,24
______ = _____ = - 1,12
-2 -2
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b=+6
c=+8
x= -(6) +- raiz quadrada de 68
_______________________
2× (-1)
x1= -6 - 8,24 -14,24
______ = _____ = 12,24
-2 -2
x2 = -6 +8,24 +2,24
______ = _____ = - 1,12
-2 -2