Question

[Lê Kiều Trinh]

1 Chứng minh đẳng thức

12 ⁸.9¹²=18¹⁶

Answer 1

[nguyễn tuấn thảo]

\(12^8\cdot9^{12}\)

\(=\left(2^2\cdot3\right)^8\cdot\left(3^2\right)^{12}\)

\(=\left(2^2\right)^8\cdot3^8\cdot3^{24}\)

\(=2^{16}\cdot3^{32}\)

\(=2^{16}\cdot\left(3^2\right)^{16}\)

\(=\left(2\cdot3^2\right)^{16}\)

\(=18^{16}\)