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(4x的平方-x的3次方-2x)除以2x-(x-1)的平方=(4x²-x³-2x)÷2x-(x-1)²=2x-2分之1x²-1-(x²-2x+1)=2x-2分之1x²-1-x²+2x-1=4x-2分之3x²-2希望对你有帮助
(4x²-x³-2x)÷2x-(x-1)²=[2x(2x-x²/2-2)]÷2x-(x²-2x+1)=(2x-x²/2-2)-(x²-2x+1)=2x-x²/2-2-x²+2x-1=-3x²/2+4x-3