问题
解答题
求减去-
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答案
设原多项式为A,
∵A-(-x3+2x2-1)=-2x2+3x-2,
∴A=(-x3+2x2-1)+(-2x2+3x-2)
=-x3+2x2-1-2x2+3x-2
=-x3+3x-3.
求减去-
|
设原多项式为A,
∵A-(-x3+2x2-1)=-2x2+3x-2,
∴A=(-x3+2x2-1)+(-2x2+3x-2)
=-x3+2x2-1-2x2+3x-2
=-x3+3x-3.