Question

Equação exponencial
2^x+2 + 2^x+1 = 18

Answer 1

Se for  2ˣ⁺² +2ˣ⁺¹=18

2ˣ * 2² +2ˣ *2¹=18

2ˣ*(2²+2¹)=18

2ˣ=18/6

2ˣ =3

log 2ˣ =log 3

x* log 2 = log 3

x= log 3/log 2

x = log₂ 3