若2x2-6x+1=0,则6+3x-x2=
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若2x2-6x+1=0,则6+3x-x2=若2x2-6x+1=0,则6+3x-x2=若2x2-6x+1=0,则6+3x-x2=2x²-6x+1=0x²-3x+0.5=0x²
若2x2-6x+1=0,则6+3x-x2=
若2x2-6x+1=0,则6+3x-x2=
若2x2-6x+1=0,则6+3x-x2=
2x²-6x+1=0
x²-3x+0.5=0
x²-3x=-0.5
6+3x-x²
=6-(x²-3x)
=6+0.5
=6.5
2x2-6x+1=0
x^2-3x=-1/2
6+3x-x^2
=6+1/2
=6.5
若2x2-6x+1=0,则6+3x-x2=
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