m(m-2)-(m^2-2n)=-4 ,则 (m^2+n^2)÷2-mn=_____
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m(m-2)-(m^2-2n)=-4,则(m^2+n^2)÷2-mn=_____m(m-2)-(m^2-2n)=-4,则(m^2+n^2)÷2-mn=_____m(m-2)-(m^2-2n)=-4,则
m(m-2)-(m^2-2n)=-4 ,则 (m^2+n^2)÷2-mn=_____
m(m-2)-(m^2-2n)=-4 ,则 (m^2+n^2)÷2-mn=_____
m(m-2)-(m^2-2n)=-4 ,则 (m^2+n^2)÷2-mn=_____
因为m(m-2)-(m^2-2n)=-4 ,
所以m^2-2m-m^2+2n=-4,
所以-2m+2n=-4,
所以m-n=2,
所以(m^2+n^2)/2-mn
=(m-n)^2/2
=2^2/2
=2.
m^2-2m-m^2+2n=-4
m-n=2
原式=(m-n)^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)
(m-2n/n-m)-(n/m-n)=
(m-2n)(2n+m)-(-3m-4n)(4n-3m)=
.4(m+n)^2*(m+n)^3-7(m+n)(m+n)^4+5(m+n)^5=
(1),(-m-n)(-m+n) (2),(-m+n)(m-n)
(n/m+n/2m^2)*4m/n^2
[(m-n)^2*(m-n)^3]^2/(m-n)^4
[(m-n)^2*(m-n)^3]^2/(m-n)^4
4m^2(m+n)-9n^2(m+n)
因式分解4m^2(m-n)+4n(n-m)
4m(m-n)^2+4n(n-m)^3
(m-n)2(n-m)3(n-m)4化简
(m-n)^3(n-m)^2(m-n)=_____
(m-2n)(-m-n)
2(m-n)²-m(m-n)