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fabi965
@fabi965
March 2022
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os seguintes pares de numeros reais são raízes de uma equação do 2 grau na incognita x.Determine cada uma das equações:
a)5 e 7
b)6 e 6
c)2 e -11
d)-8 e 8
e)0 e -7
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claudiasoueu
Vou fazer a a) e a c) e vc faz as outras
a) 5 e 7
(x - 5).(x - 7) = 0
x² - 5x -7x +35 = 0
x² - 12x + 35 = 0
c)2 e -11
(x - 2).(x-(-11))=0
(x-2)(x+11)=0
x² -2x +11x - 22=0
x² + 9x - 22 = 0
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Lista de comentários
a) 5 e 7
(x - 5).(x - 7) = 0
x² - 5x -7x +35 = 0
x² - 12x + 35 = 0
c)2 e -11
(x - 2).(x-(-11))=0
(x-2)(x+11)=0
x² -2x +11x - 22=0
x² + 9x - 22 = 0