Question

2^(x+2) +3 ori 2^x-1=11/4.

Answer 1

2^(x+2) + 3 * 2^(x-1) = 11/4

2^(x-1) (2^3 + 3) = 11/4

2^(x-1) * 11 = 11/4

2^(x-1) = 1/4 = 2^(-2)

Rezulta x-1 = -2, deci x=-1

Raspuns: x=-1

Verificare

2^1 + 3*2^(-2) = 2 + 3/4 = (8 + 3)/4 = 11/4