(m+n)^2-8(m^2-n^2)+16(m-n)^2= 用因式分解
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(m+n)^2-8(m^2-n^2)+16(m-n)^2=用因式分解(m+n)^2-8(m^2-n^2)+16(m-n)^2=用因式分解(m+n)^2-8(m^2-n^2)+16(m-n)^2=用因式
(m+n)^2-8(m^2-n^2)+16(m-n)^2= 用因式分解
(m+n)^2-8(m^2-n^2)+16(m-n)^2= 用因式分解
(m+n)^2-8(m^2-n^2)+16(m-n)^2= 用因式分解
(m+n)^2-8(m^2-n^2)+16(m-n)^2
=(m+n)^2-2×4(m-n)(m+n)+[4(m-n)]^2
=[(m+n)-4(m-n)]^2
=(m+n-4m+4n)^2
=(-3m+5n)^2
=(5n-3m)^2
(1),(-m-n)(-m+n) (2),(-m+n)(m-n)
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(m-2n/n-m)-(n/m-n)=
2(m-n)²-m(m-n)
(m-n)(m+n)+(m+n)²-2m²
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+(n+1)!/1!+(n+2)!/2!+.+(n+m)!/m!,
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