3(x²y)-2y³+4xy²)-2(-3y³+6xy²+x²y)请化简化简谢谢

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3(x²y)-2y³+4xy²)-2(-3y³+6xy²+x²y)请化简化简谢谢

3(x²y)-2y³+4xy²)-2(-3y³+6xy²+x²y)请化简化简谢谢
3(x²y)-2y³+4xy²)-2(-3y³+6xy²+x²y)请化简
化简谢谢

3(x²y)-2y³+4xy²)-2(-3y³+6xy²+x²y)请化简化简谢谢
原式
=3x²y-2y³+4xy²+6y³-12xy²-2x²y
=3x²y-2x²y+(6y³-2y³)+(4xy²-12xy²)
=x²y+4y³-8xy²