(已知:x+y=1/2.xy=1,求x³y+2x²y²+xy³
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(已知:x+y=1/2.xy=1,求x³y+2x²y²+xy³(已知:x+y=1/2.xy=1,求x³y+2x²y²+xy
(已知:x+y=1/2.xy=1,求x³y+2x²y²+xy³
(已知:x+y=1/2.xy=1,求x³y+2x²y²+xy³
(已知:x+y=1/2.xy=1,求x³y+2x²y²+xy³
x³y+2x²y²+xy³=xy(x² +2xy+y²)=xy(x+y)²=1X(1/2)²=1/4 话说,你是来消遣的吗
x³y+2x²y²+xy³=xy(x²+2xy+y²)=xy(x+y)²=1/4
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x³y+2x²y²+xy³=xy(x² +2xy+y²)=xy(x+y)²=1X(1/2)²=1/4
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