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因式分解:a2x2-4+a2y2-2a2xy
人气:229 ℃ 时间:2020-03-24 13:18:02
解答
a2x2-4+a2y2-2a2xy,
=(a2x2-2a2xy+a2y2)-4,
=a2(x2-2xy+y2)-4,
=a2(x-y)2-22
=(ax-ay+2)(ax-ay-2).
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