观察,分析,猜想并对猜想的正确性予以说明.1×2×3×4+1=5 2 2×3×4×5+1=11 2 3×4×5×6+1=19 2 4×

2025-06-24 06:17:35
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回答1:

∵1×2×3×4+1=[(1×4)+1] 2 =5 2
2×3×4×5+1=[(2×5)+1] 2 =11 2
3×4×5×6+1=[(3×6)+1] 2 =19 2
4×5×6×7+1=[(4×7)+1] 2 =29 2
∴n(n+1)(n+2)(n+3)+4=[n(n+3)+1] 2
故答案为[n(n+3)+1] 2