Verified answer

Ответ:

[tex] {3}^{2x + 5} = {3}^{x + 2} + 2[/tex]

=[tex] {( {3}^{x} )}^{2} \times 243 = {3}^{x} \times 9 + 2 [/tex]

=[tex]x = - 2[/tex]