Question

2^(x+1) + 2^x + 2^(x–1) = 28

Answer 1

Respuesta:

x = 3

Explicación paso a paso:

(2^2 + 2 + 1) * 2^(x-1) = 28

(4 + 2 + 1) * 2^(x-1) = 28

7 * 2^(x-1) = 28

2^(x-1) = 4

2^(x-1)=2^2

x-1=2

x=3