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数学
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约分x³-4xy²/3x³+6x²y
人气:183 ℃ 时间:2020-01-30 00:38:40
解答
x³-4xy²/3x³+6x²y
=x(x²-4y²)/[3x²(x+2y)]
=x(x-2y)(x+2y)/[3x²(x+2y)]
=(x-2y)/3x
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