观察:4×6=24,14×16=224,24×26=624,34×36=1224...

2025-12-16 08:49:27
推荐回答(1个)
回答1:

1.代数式:(10n+4)x(10n+6)=100n(n+1)+24
2.124x126=100x12x(12+1)+24=15624
3.略