求24xy^2z^2(x+y-z)-32xyz(z-x-y)^2+8xyz^3(z-x-y)怎么做!
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求24xy^2z^2(x+y-z)-32xyz(z-x-y)^2+8xyz^3(z-x-y)怎么做!
明天要交嗯,七年级数学练习册28页第8题,24xy^2z^2(x+y-z)-32xyz(z-x-y)^2+8xyz^3(z-x-y),
明天要交嗯,七年级数学练习册28页第8题,24xy^2z^2(x+y-z)-32xyz(z-x-y)^2+8xyz^3(z-x-y),
![求24xy^2z^2(x+y-z)-32xyz(z-x-y)^2+8xyz^3(z-x-y)怎么做!](/uploads/image/z/20316071-47-1.jpg?t=%E6%B1%8224xy%5E2z%5E2%28x%2By-z%29-32xyz%28z-x-y%29%5E2%2B8xyz%5E3%28z-x-y%29%E6%80%8E%E4%B9%88%E5%81%9A%21)
24xy^2z^2(x+y-z)-32xyz(z-x-y)^2+8xyz^3(z-x-y)
=24xy^2z^2(x+y-z)+32xyz(x+y-z)^2-8xyz^3(x+y-z)
=8xyz(x+y-z)(3yz+4-2z^2)
=24xy^2z^2(x+y-z)+32xyz(x+y-z)^2-8xyz^3(x+y-z)
=8xyz(x+y-z)(3yz+4-2z^2)
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