是说明代数式-(3x2y+10x3)+3x3+6x3y+3x2y-(6x3y-7x3)的值与x,y都无关
3个回答
-(3x2y+10x3)+3x3+6x3y+3x2y-(6x3y-7x3)
=-3x²y-10x³+3x³+6x³y+3x²y-6x³y+7x³
=0
∴它的值与x,y无关
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