2. Вычислите: 1) 2³ : 2⁶ 2) (3-1)⁻³ 3) 12⁻³ : 12⁻⁴ 4) (a⁻⁵)⁴ · a²²

2. Вычислите:

1. \( 2^3 : 2^6 = 2^{3-6} = 2^{-3} = \frac{1}{2^3} = \frac{1}{8} \)
2. \( (3-1)^{-3} = 2^{-3} = \frac{1}{2^3} = \frac{1}{8} \)
3. \( 12^{-3} : 12^{-4} = 12^{-3-(-4)} = 12^{-3+4} = 12^1 = 12 \)
4. \( (a^{-5})^4 \cdot a^{22} = a^{-5 \cdot 4} \cdot a^{22} = a^{-20} \cdot a^{22} = a^{-20+22} = a^2 \)