Question

Помогите решить: $2^{x+3}-7*2^{x+2}=-5$

Answer 1

2^(x + 3) - 7*2^(x + 2) = -5

2*2^(x + 2) - 7*2^(x + 2) = -5

- 5*2^(x + 2) = -5

2^(x + 2) = 1

x = -2