因式分解:(a^2-b^2)-(x^2-y^2)-2ay+2bx

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因式分解:(a^2-b^2)-(x^2-y^2)-2ay+2bx
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因式分解:(a^2-b^2)-(x^2-y^2)-2ay+2bx
因式分解:(a^2-b^2)-(x^2-y^2)-2ay+2bx

因式分解:(a^2-b^2)-(x^2-y^2)-2ay+2bx
:(a^2-b^2)-(x^2-y^2)-2ay+2bx
=(a^2+y^2-2ay)-(b^2+x^2-2bx)
=(a-y)^2-(b-x)^2
=(a-y+b-x)(a-y-b+x)