32-12=8×1；52-32=8×2；72-52=8×3… Observe the above formula, what law can you find? Please use algebra to express, and use this law to calculate the value of 20012-19992

Is (2n + 1) &# 178; - (2n-1) &# 178; = 8N
2001=2×1000+1
So n = 1000
So the original formula = 8 × 1000 = 8000

RELATED INFORMATIONS

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