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(-1)×2×(-3)×···×(-49)×50×(-2的5次方) ---------- 2×4×6····×100
人气:351 ℃ 时间:2019-08-19 04:18:48
解答
(-1)×2×(-3)×···×(-49)×50×(-2的5次方)
=50!×(-2^5)
=-32×50!.
2×4×6····×100=100!
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