x(a-b)*2n+y(b-a)*2n-1 怎么因式分解,

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x(a-b)*2n+y(b-a)*2n-1 怎么因式分解,

x(a-b)*2n+y(b-a)*2n-1
=(a-b)(2nx-(2n-1)y)
=(a-b)(2nx-2ny+y)

=(a-b)*2n)x-(a-b)(2n-1)y
=(a-b)[(2n)x-(2n-1)y]