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Shail
@Shail
May 2020
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Equação incompleta do 2º grau: x/x+1 = 8/3 +x/1-x ??????
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douglas88jogad
x/x+1 = 8/3 +x/1-x
x/x+1 - x/1-x - 8/3 = 0
3(-x+1)(X) - 3(x+1)(X) - 8(x+1)(-x+1)/3(x+1)(-x+1) = 0
3(-x² + x) - 3(x²+x) -8(-x² + x - x +1) = 0
-3x² + 3x - 3x² - 3x +8x² -8x +8x -8 = 0
2x² - 8 =0
x² = 4
x = +2
ou
x = -2
2 votes
Thanks 1
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Lista de comentários
x/x+1 - x/1-x - 8/3 = 0
3(-x+1)(X) - 3(x+1)(X) - 8(x+1)(-x+1)/3(x+1)(-x+1) = 0
3(-x² + x) - 3(x²+x) -8(-x² + x - x +1) = 0
-3x² + 3x - 3x² - 3x +8x² -8x +8x -8 = 0
2x² - 8 =0
x² = 4
x = +2
ou
x = -2