Question

Resolva A Equação Exponencial 7^x+7^x-1= 8

Answer 1

 7^x+7^x-1= 8

2×7^​x​​−1=8
2×7​^x​​=8+1

2×7​^x​​=9

7^​x​​=​2/​​9​​

x=log​_7​ ​​2​​/9​​

x=​​log​2/​​9​​​​  /  log7