多项式x²-7x-2减去m的差为3x²-11x-1,则m=
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多项式x²-7x-2减去m的差为3x²-11x-1,则m=
多项式x²-7x-2减去m的差为3x²-11x-1,则m=
多项式x²-7x-2减去m的差为3x²-11x-1,则m=
-2 x 平方+4x +1