已知(3x+1)(x-1)-(x+3)(5x-6)=x^2-10x+m,则m=

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已知(3x+1)(x-1)-(x+3)(5x-6)=x^2-10x+m,则m=

已知(3x+1)(x-1)-(x+3)(5x-6)=x^2-10x+m,则m=
已知(3x+1)(x-1)-(x+3)(5x-6)=x^2-10x+m,则m=

已知(3x+1)(x-1)-(x+3)(5x-6)=x^2-10x+m,则m=
(3x+1)(x-1)-(x+3)(5x-6)
=(3x²-2x-1)-(5x²+9x-18)
=3x²-2x-1-5x²-9x+18
=-2x²-11x+17
=x²-10x+m
显然不相等
题目不对