试说明代数式/-(3x²y+10x³)+3x³+6x³y+3x²y-(6x³y-7x³)的值与x,y都无关

试说明代数式/-(3x²y+10x³)+3x³+6x³y+3x²y-(6x³y-7x³)的值与x,y都无关
试说明代数式/-(3x²y+10x³)+3x³+6x³y+3x²y-(6x³y-7x³)的值与x,y都无关

试说明代数式/-(3x²y+10x³)+3x³+6x³y+3x²y-(6x³y-7x³)的值与x,y都无关
把括号去掉然后算最后得0
=-3x²y-10x³+3x³+6x³y+3x²y-6x³y+7x³
=-3x²y+3x²y+3x³+7x³-10x³+6x³y-6x³y
=0