已知2^a*5^b=2^c*5^d=10,求证:(a-1)(d-1)=(b-1)(c-1) 已知2^a*5^b=2^c*5^d=10,求证:(a-1)(d-1)=(b-1)(c-1) 发布时间:2025-07-01 21:42:37