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2ax^2-4axy+2ay^2-8a
人气:441 ℃ 时间:2020-05-22 03:42:40
解答
2ax²-4axy+2ay²-8a
=2a[(x²-2xy+y²)-4]
=2a[(x-y)²-4]
=2a(x-y+2)(x-y-2)
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