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Mile44
@Mile44
April 2020
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Resolva para mim ? 9x²-1=3x-x²? por favor
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geovannalopes29
10x²-3x-1=0
∆=(-3)²-4(10)(-1)=
9+40=49
√49=7
x=(3±7)/20
x'=-4/20=-1/5
x"=10/20=1/2
1 votes
Thanks 3
dokinhatd
9x² + x² - 3x - 1 = 0
10x² - 3x - 1 = 0
Calculando a equação do segundo grau:
∆ = (-3)² - 4 x 10 x (-1)
∆ = 9 + 40
∆ = 49
x¹ =
}{2x10} [/tex] =
=
x² =
}{2x10} [/tex] =
=
0 votes
Thanks 1
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∆=(-3)²-4(10)(-1)=
9+40=49
√49=7
x=(3±7)/20
x'=-4/20=-1/5
x"=10/20=1/2
10x² - 3x - 1 = 0
Calculando a equação do segundo grau:
∆ = (-3)² - 4 x 10 x (-1)
∆ = 9 + 40
∆ = 49
x¹ =
x² =