Tìm n?

2ⁿ + 2^{n + 3} = 144

2ⁿ + 2ⁿ . 8 = 144

2ⁿ (1 + 8) = 144

2ⁿ.9 = 144

2ⁿ = 16

2ⁿ = 2⁴

n = 4

Vậy n = 4.