Question

[3(a-b)^3-2(b-a)^2-(a-b)]除以(a-b)等于多少?

Answer 1

[3(a-b)^3-2(b-a)^2-(a-b)]除以(a-b)

=[3(a-b)³-2(a-b)²-(a-b)]÷(a-b)

=3(a-b)²-2(a-b)-1

=[3(a-b)+1](a-b-1)

=(3a-3b+1)(a-b-1)

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