6(m^4+n^3)-(2m^2-5)-3(2m^4+3n^3)+(-2m^2+1)其中m=1/2,n=-2
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6(m^4+n^3)-(2m^2-5)-3(2m^4+3n^3)+(-2m^2+1)其中m=1/2,n=-26(m^4+n^3)-(2m^2-5)-3(2m^4+3n^3)+(-2m^2+1)其中m=
6(m^4+n^3)-(2m^2-5)-3(2m^4+3n^3)+(-2m^2+1)其中m=1/2,n=-2
6(m^4+n^3)-(2m^2-5)-3(2m^4+3n^3)+(-2m^2+1)其中m=1/2,n=-2
6(m^4+n^3)-(2m^2-5)-3(2m^4+3n^3)+(-2m^2+1)其中m=1/2,n=-2
原式=6m^4+6n^3-2m^2+5-6m^4-9n^3-2m^2+1
=-3n^3-4m^2+6
=24-1+6
=29
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