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12a²b(x-y)³-4ab(y-x)² 因式分解
人气:488 ℃ 时间:2020-01-28 18:10:55
解答
12a²b(x-y)³-4ab(y-x)²
=12a²b(x-y)³-4ab(x-y)²
=4ab(x-y)²×3a(x-y)-4ab(x-y)²
=4ab(x-y)²(3ax-3ay-1)
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