Question

1) Resolva as equação exponencial a)2ˣ⁺¹+2ˣ=48

Answer 1

${2}^{x + 1} + {2}^{x} = 48 \\ (2 + 1) \times {2}^{x} = 48 \\ 3 \times {2}^{x} = 48 \: \: ^{ \div 3} \\ {2}^{x} = 16 \\ {2}^{x} = {2}^{4} \\ x = 4$