方程7*3^(x+1)-5^(x+2)=3^(x+4)-5^(x+3)的解集为___________________
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/20 12:11:11
![方程7*3^(x+1)-5^(x+2)=3^(x+4)-5^(x+3)的解集为___________________](/uploads/image/z/216669-21-9.jpg?t=%E6%96%B9%E7%A8%8B7%2A3%5E%28x%2B1%29-5%5E%28x%2B2%29%3D3%5E%28x%2B4%29-5%5E%28x%2B3%29%E7%9A%84%E8%A7%A3%E9%9B%86%E4%B8%BA___________________)
方程7*3^(x+1)-5^(x+2)=3^(x+4)-5^(x+3)的解集为___________________
方程7*3^(x+1)-5^(x+2)=3^(x+4)-5^(x+3)的解集为___________________
方程7*3^(x+1)-5^(x+2)=3^(x+4)-5^(x+3)的解集为___________________
最后化简为 3^x+1=5^x+1 即 (5/3)^x+1=1 得x=-1