.麻烦写出过程...1.(m+1)(m-1)(m²-1)2.(2m+n)(2m-n)

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.麻烦写出过程...1.(m+1)(m-1)(m²-1)2.(2m+n)(2m-n)
.麻烦写出过程...
1.(m+1)(m-1)(m²-1)
2.(2m+n)(2m-n)

.麻烦写出过程...1.(m+1)(m-1)(m²-1)2.(2m+n)(2m-n)
1.(m+1)(m-1)(m²-1)
=(m²+m-m-1)(m²-1)
=(m²-1)(m²-1)
=(m²-1)² 或 =m4次方-2m²+1
2.(2m+n)(2m-n)
=4m²+2mn-2mn-n²
=4m²-n²