Question

solve the following equation to find value of x.

Answer 1

${( {3}^{x + 2} )}^{2 } - 2. {3}^{x + 2} + 1 = 0 \\ ( {3}^{x + 2} - 1 = 0) \\ {3}^{x + 2} = 1 \\ x + 2 = 0 \\ x = - 2$