若(m+1/2)^2+|n+1|=0,求5m^2×n^3+4(m-n)的值.

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若(m+1/2)^2+|n+1|=0,求5m^2×n^3+4(m-n)的值.若(m+1/2)^2+|n+1|=0,求5m^2×n^3+4(m-n)的值.若(m+1/2)^2+|n+1|=0,求5m^2

若(m+1/2)^2+|n+1|=0,求5m^2×n^3+4(m-n)的值.
若(m+1/2)^2+|n+1|=0,求5m^2×n^3+4(m-n)的值.

若(m+1/2)^2+|n+1|=0,求5m^2×n^3+4(m-n)的值.
(m+1/2)^2与|n+1|都大于等于0,而(m+1/2)^2+|n+1|=0,
所以(m+1/2)^2=0,|n+1|=0
解得m=-1/2 n=-1
5m^2×n^3+4(m-n)
=5*(-1/2)^2*(-1)^3+4*[-1/2-(-1)]
=-5/4+2
=-1/4