(2X^3-4x^2+6x)/(-2x)-(x-1)^2
1个回答
(2X^3-4x^2+6x)/(-2x)-(x-1)^2
=-x^2+2x-3-(x^2-2x+1)
=-x^2+2x-3-x^2+2x-1
=-2x^2+4x-4
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