作业帮已知m,n满足(m-2)²+|½n+1|=0.求[(3m-n)²-(2m+n)²+5m(m-n)]÷5m的值
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已知m,n满足(m-2)²+|½n+1|=0.求[(3m-n)²-(2m+n)²+5m(m-n)]÷5m的值
已知m,n满足(m-2)²+|½n+1|=0.求[(3m-n)²-(2m+n)²+5m(m-n)]÷5m的值
已知m,n满足(m-2)²+|½n+1|=0.求[(3m-n)²-(2m+n)²+5m(m-n)]÷5m的值
已知m,n满足(m-2)²+|½n+1|=0
所以m-2=0,½n+1=0
所以m=2,n=-2
所以[(3m-n)²-(2m+n)²+5m(m-n)]÷5m
=[(3*2+2)²-(2*2-2)²+5*2(2+2)]÷(5*2)
=(64-4+40)÷10=10