若m(m-2)-(m^2-2n)=-4,则[(m^2+n^2)/2]_mn=若m(m-2)-(m^2-2n)=-4,则[(m^2+n^2)/2]-mn=
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若m(m-2)-(m^2-2n)=-4,则[(m^2+n^2)/2]_mn=若m(m-2)-(m^2-2n)=-4,则[(m^2+n^2)/2]-mn=若m(m-2)-(m^2-2n)=-4,则[(m
若m(m-2)-(m^2-2n)=-4,则[(m^2+n^2)/2]_mn=若m(m-2)-(m^2-2n)=-4,则[(m^2+n^2)/2]-mn=
若m(m-2)-(m^2-2n)=-4,则[(m^2+n^2)/2]_mn=
若m(m-2)-(m^2-2n)=-4,则[(m^2+n^2)/2]-mn=
若m(m-2)-(m^2-2n)=-4,则[(m^2+n^2)/2]_mn=若m(m-2)-(m^2-2n)=-4,则[(m^2+n^2)/2]-mn=
若m(m-2)-(m^2-2n)=-4
m^2-2m-m^2+2n=-4
m-n=2
[(m^2+n^2)/2]-mn
=(m^2-2mn+n^2)/2
=(m-n)^2/2
=2^2/2
=2
(m-n)^2*(m-n)^4=?
m+n/4m^-n^-m-2m/n^-4m^=
已知3m=4n,则m/m+n+n/m-n-m^2/m^2-n^2=
4m(m-m)-2n(n-m)
若(m+n)(m-n)^2-mn(m+n)=(m+n)·M,则M是
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(m-2n/n-m)-(n/m-n)=
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若(m-2n)/(2m+n)=3,则[3(m-2n)/(2m+n)-(m-2n)/[2(2m+n)] - {9(m-2n)/[4(2m+n)]}的值是?
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