因式分解:24xy^2*z^2(x+y-z)-6x^2yz(z-x-y)^2-8xyz^3(x+y-3)
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24xy^2*z^2(x+y-z)-6x^2yz(z-x-y)^2-8xyz^3(x+y-z)
=2xyz(x+y-z)(12yz-3x²-3xy+3xz-4z²)
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