(3m-n+2)(3m-n-2)和2011^2-2010×2012
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(3m-n+2)(3m-n-2)和2011^2-2010×2012(3m-n+2)(3m-n-2)和2011^2-2010×2012(3m-n+2)(3m-n-2)和2011^2-2010×2012(
(3m-n+2)(3m-n-2)和2011^2-2010×2012
(3m-n+2)(3m-n-2)和2011^2-2010×2012
(3m-n+2)(3m-n-2)和2011^2-2010×2012
(3m-n+2)(3m-n-2)
＝[(3m-n)+2][(3m-n)-2]
=(3m-n)²-2²
=9m²-6mn+n²-4
2011²-2010×2012
=2011²-(2011-1)(2011+1)
=2011²-(2011²-1²)
=2011²-2011²+1²
=1²
=1
比较大小？
[(m-n)^2*(m-n)^3]^2/(m-n)^4
[(m-n)^2*(m-n)^3]^2/(m-n)^4
3m(m-n)-2n(m-n)的平方
因式分解(n-m)^3(m-n)^2-(m-n)^5
（m-n)2(n-m)3(n-m)4化简
（n-m)^3×(m-n)^2-(m-n)^5
计算(m+n)^3-(n+m)(m-n)^2
(m-n)^3(n-m)^2(m-n)=_____
4m(m-n)^2+4n(n-m)^3
如果m和n互为相反数,则m+2m+3m+4m+5m+5n+4n+3n+2n+n=
2(m-n)的2次-(m+n)(m-2n)-3n(n-m)
(m-n)3-(2n-m)3
2m-3n-m+2n
(3m-n)(m-2n)=()
(m+2n)(m-3n)
(m-3n)(2m+n)
约分(m-n)^2/(n-m)^3
分解因式(2m-n)(2m-n)(2m-n)+3n(n-2m)(n-2m)