(-3x³y²)x(3x²y-2xy²)的过程和结果谢谢~

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(-3x³y²)x(3x²y-2xy²)的过程和结果谢谢~
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(-3x³y²)x(3x²y-2xy²)的过程和结果谢谢~
(-3x³y²)x(3x²y-2xy²)的过程和结果谢谢~

(-3x³y²)x(3x²y-2xy²)的过程和结果谢谢~
(-3x³y²)x(3x²y-2xy²)
=-9x^5 y³ +6x^4 y^4