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分解因式:a2(x-y)+b2(y-x)=______.
人气:446 ℃ 时间:2020-05-28 07:39:36
解答
a2(x-y)+b2(y-x)
=a2(x-y)-b2(x-y)
=(x-y)(a2-b2
=(x-y)(a+b)(a-b).
故答案为:(x-y)(a+b)(a-b).
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