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Cameron Barnes
Mathematics
1 October, 22:36
X² - 6x + 9=16 A solução?
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Dashawn Herring
1 October, 22:53
0
Torná-lo igual a 0
x ²-6x+9=16
x²-6x-7=0
fator
Encontrar o que 2 números se multiplicam para obter - 7 e adicionar para obter - 6
-7 e 1
(x-7) (x+1) = 0
Definir cada um igual a 0 e resolver para x
x-7=0
x=7
x+1=0
x=-1
x=-1 e 7
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