因式分解,(a-b)(x-y)-(b-a)(x-y)(a-b)(x-y)-(b-a)(x+y)

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因式分解,(a-b)(x-y)-(b-a)(x-y)(a-b)(x-y)-(b-a)(x+y)

因式分解,(a-b)(x-y)-(b-a)(x-y)(a-b)(x-y)-(b-a)(x+y)
因式分解,(a-b)(x-y)-(b-a)(x-y)
(a-b)(x-y)-(b-a)(x+y)

因式分解,(a-b)(x-y)-(b-a)(x-y)(a-b)(x-y)-(b-a)(x+y)
(a-b)(x-y)-(b-a)(x-y)
=(a-b)(x-y)+(a-b)(x-y)
=2(a-b)(x-y)
(a-b)(x-y)-(b-a)(x+y)
=(a-b)(x-y)+(a-b)(x+y)
=(a-b)(x-y+x+y)
=2x(a-b)