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已知m,x,y满足条件:(1)2/3(x-5)²+5*(m的绝对值)=0;(2)-2a²b^(y+1)与3a²b³是同类项求代数式:0.375x²y+5m²x-{-7/16x²y+[+1/4xy²+(-3/16x²y-3.475xy²)]-6.275}的值XXXXXXXXXXXXXXXXXXXXXXX

题目详情
已知m,x,y满足条件:(1)2/3(x-5)²+5*(m的绝对值)=0;(2)-2a²b^(y+1)与3a²b³是同类项 求代数式:0.375x²y+5m²x-{-7/16x²y+[+1/4xy²+(-3/16x²y-3.475xy²)]-6.275}的值
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答案和解析
2/3(x-5)²+5|m|=0得x=5,m=0-2a²b^(y+1)与3a²b³是同类项得y+1=3,y=20.375x²y+5m²x-{-7/16x²y+[+1/4xy²+(-3/16x²y-3.475xy²)]-6.275}=3/8x²y-(-7/16x²...