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因式分解a(x-y)∧2-b(y-x)
人气:443 ℃ 时间:2020-03-30 04:08:20
解答
a(x-y)²-b(y-x)
=a(x-y)²+b(x-y)
=(x-y)×[a(x-y)+b]
=(x-y)(ax-ay+b)
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