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因式分解 x(a-b)^2n +xy(b-a)^2n+1 x^3(x-y)^2-x^2(y-x)^2
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x(a-b)^2n +xy(b-a)^2n+1
=x(a-b)^2n-xy(a-b)^2n+1
=x(a-b)^2n(1-ay+by)
x^3(x-y)^2-x^2(y-x)^2
=x³(x-y)²-x²(x-y)²
=x²(x-y)²(x-1)
=x(a-b)^2n-xy(a-b)^2n+1
=x(a-b)^2n(1-ay+by)
x^3(x-y)^2-x^2(y-x)^2
=x³(x-y)²-x²(x-y)²
=x²(x-y)²(x-1)
2011-12-01
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