1/2 x²y+m=1/2 xy(n+2y)=1/2 xyn+xy²
n=x
m=xy²
若1/2 x的平方y+m=1/2 xy(n+2y),则m= ,n= .
若1/2 x的平方y+m=1/2 xy(n+2y),则m= ,n= .
数学人气：798 ℃时间：2019-10-31 20:49:19
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