计算:a n-5 (a n+1 b 3m-2 ) 2 +(a n-1 b m-2 ) 3 (-b 3m+2

计算:a n-5 (a n+1 b 3m-2 ) 2 +(a n-1 b m-2 ) 3 (-b 3m+2 )
2025-05-07 04:59:22
推荐回答(1个)
回答1:

原式=a n-5 (a 2n+2 b 6m-4 )+a 3n-3 b 3m-6 (-b 3m+2 ),
=a 3n-3 b 6m-4 +a 3n-3 (-b 6m-4 ),
=a 3n-3 b 6m-4 -a 3n-3 b 6m-4
=0.