先化简,再求值:3x³y²(-3xy³)-(-x²y³)(-x²y²),其中x=2,y=3
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先化简,再求值:3x³y²(-3xy³)-(-x²y³)(-x²y²),其中x=2,y=3
先化简,再求值:3x³y²(-3xy³)-(-x²y³)(-x²y²),其中x=2,y=3
先化简,再求值:3x³y²(-3xy³)-(-x²y³)(-x²y²),其中x=2,y=3
3x³y²(-3xy³)-(-x²y³)(-x²y²),
=-9x^4y^5-x^4y^5
=-10x^4y^5
=-10*2^4*3^5
=-38880