(1-1⼀2)*(1+1⼀2)*(1-1⼀3)*(1+1⼀3)

2025-06-22 01:34:03
推荐回答(1个)
回答1:

(1-1/2)*(1+1/2)*(1-1/3)*(1+1/3)
=1/2×2/3×3/2×4/3
=1/3×2
=3/2