分解因式.﹙a-b﹚²﹙x-2y﹚+﹙b-a﹚﹙2y-x﹚.
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分解因式.﹙a-b﹚²﹙x-2y﹚+﹙b-a﹚﹙2y-x﹚.
分解因式.﹙a-b﹚²﹙x-2y﹚+﹙b-a﹚﹙2y-x﹚.
分解因式.﹙a-b﹚²﹙x-2y﹚+﹙b-a﹚﹙2y-x﹚.
﹙a-b﹚²﹙x-2y﹚+﹙b-a﹚﹙2y-x﹚
=﹙a-b﹚²﹙x-2y﹚+﹙a-b﹚﹙x-2y﹚
=(a-b)(x-2y)(a-b+1)
﹙a-b﹚²﹙x-2y﹚+﹙b-a﹚﹙2y-x﹚
=(a-b)^2(x-2y)-(b-a)(x-2y)
=(x-2y)[(a-b)^2-(b-a)]
=(x-2y)[(a-b)^2+(a-b)]
=(x-2y)(a-b)(a-b+1)