\(A = C_n^0 + 3C_n^1 + {3^2}C_n^2 + ... + {3^n}C_n^n\)
A.\({{4^n}^2}\)
B.\({4^n}\)
C.\({4^{n + 1}}\left( {{2^n} + 1} \right)\)
D.\({2^{n - 1}}\)
A.\({{4^n}^2}\)
B.\({4^n}\)
C.\({4^{n + 1}}\left( {{2^n} + 1} \right)\)
D.\({2^{n - 1}}\)
Loga
Hóa Học lớp 12
