Question

Решите уравнение : 3^х+1+3^х-1=10​

Answer 1

$3^{x+1}+3^{x-1}=10\\\\3^{x-1}(3^{2}+1)=10\\\\3^{x-1}*10=10\\\\3^{x-1}=1\\\\3^{x-1}=3^{0}\\\\x-1=0\\\\\boxed{x=1}$