约分x³-4xy²/3x³+6x²y

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约分x³-4xy²/3x³+6x²y

x³-4xy²/3x³+6x²y
=x(x^2-4y^2)/3x^2(x+2y)
=x(x+2y)(x-2y)/3x^2(x+2y)
=(x-2y)/3x