-4xy²(a-b)²+6x²y³(b-a)因式分解
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-4xy²(a-b)²+6x²y³(b-a)因式分解
-4xy²(a-b)²+6x²y³(b-a)因式分解
-4xy²(a-b)²+6x²y³(b-a)因式分解
-4xy²(a-b)²+6x²y³(b-a)
=-2xy²(a-b) (2(a-b)+3xy ).提取公因式
=-2xy²(a-b) (2a-2b+3xy )
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