一道数学题,3的m次幂=5,3的n=2,求3的2m-3n+1的值
人气:188 ℃ 时间:2019-08-20 01:57:19
解答
3的m次幂=5,所以3的2m次幂=25
3的n次幂=2.所以3的3n次幂=8
所以,3的2m-3n+1次幂=25÷8×3=75/8
推荐
- 已知3的m次幂=6,27的n次幂=2,求3的2m-3n次幂的值
- 已知a的2m次幂b的n+6次幂和3a的3n-1次幂b的2m+1次幂是同类项,你能求出m和n吗?
- 若3的m次幂=6,3的n次幂=2,求3的2m-3n次幂的值
- 已知10的m次幂=5,10的n次幂=6,求10的2m+3n的值
- 一道数学题,已知三分之一的负m次幂等于二,三的负n次幂分之一等于五,求九的2m减n次幂的值.
- It's March now.Spring is coming.Everything is beautiful in the park.There's a lake in the park.There are some boats in t
- Excuse me,could you please tell me the way to the post office?Sure.Go down the road and then turn
- 已知某油密度=0.795 1升=3.2元 那么1公斤=?元 (求解,要过程)
猜你喜欢