(m^2n^2+1)^2-4m^2n^2
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(m^2n^2+1)^2-4m^2n^2(m^2n^2+1)^2-4m^2n^2(m^2n^2+1)^2-4m^2n^2(m^2n^2+1)^2-4m^2n^2=(m^2n^2+1+2mn)(m^2n
(m^2n^2+1)^2-4m^2n^2
(m^2n^2+1)^2-4m^2n^2
(m^2n^2+1)^2-4m^2n^2
(m^2n^2+1)^2-4m^2n^2
=(m^2n^2+1+2mn)(m^2n^2+1-2mn)
=(mn+1)^2(mn-1)^2
这是次方吗?
(1),(-m-n)(-m+n) (2),(-m+n)(m-n)
[(m+n)(m-n)-(m-n)²+2n(m-n)]÷4n
(m-2n)(-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+2n^2/(m+n)
(m-n)^2*(m-n)^4=?
因式分解m^2-(n+1)m+n
化简,1.[(m+n-p)(m+p+n)-(m+n)²]/(-p),2.[(m+n)(m-n)-(m-n)²+2n(m-n)]/4n
4m(m-m)-2n(n-m)
(m-2n/n-m)-(n/m-n)=
2(m-n)²-m(m-n)
(m-n)(m+n)+(m+n)²-2m²