mathscounts 数学题求助(7)--many thanks!# Parenting - 为人父母a*g2011-02-06 08:021 楼4 (3^N+2)+45 (3^N)=3 What is the value of N?
a*g2011-02-06 08:023 楼Thanks.It is correct.【在 y****i 的大作中提到】: 题目会不会是 4 (3^(N+2))+45 (3^N)=3 ?: 如果是这样,答案是 N=-3