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natyvicty10
@natyvicty10
July 2022
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quais sao as raizes da equaçao(x+3)²=16?
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ProfRafael
(x+3)^2 = 16
x^2 +6x + 9 = 16
x^2 + 6x + 9 - 16 = 0
x^2 + 6x - 7 = 0
Delta = b^2 - 4.a.c
Delta = 36 - 4.(1)(-7)
Delta = 36 + 28
Delta = 64
X1 = (-b + raiz_quadrada(Delta))/2a
X1 = (-6 + 8)/2 = 1
X2 = (-b - raiz_quadrada(Delta))/2a
X2 = (-6 - 8)/2 = -14/2 = -7
Espero ter ajudado.
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a soma entre o quadrado de um numero real e 12=93 que numero e esse ? por favor me ajudem
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Lista de comentários
x^2 +6x + 9 = 16
x^2 + 6x + 9 - 16 = 0
x^2 + 6x - 7 = 0
Delta = b^2 - 4.a.c
Delta = 36 - 4.(1)(-7)
Delta = 36 + 28
Delta = 64
X1 = (-b + raiz_quadrada(Delta))/2a
X1 = (-6 + 8)/2 = 1
X2 = (-b - raiz_quadrada(Delta))/2a
X2 = (-6 - 8)/2 = -14/2 = -7
Espero ter ajudado.