Вычислите: 1) a) $$11^3$$ 2) a) $$(-5)^3$$ 3) a) $$(\frac{4}{9})^2$$

1) $$11^3 = 11 \cdot 11 \cdot 11 = 121 \cdot 11 = 1331$$ 2) $$(-5)^3 = (-5) \cdot (-5) \cdot (-5) = 25 \cdot (-5) = -125$$ 3) $$(\frac{4}{9})^2 = \frac{4}{9} \cdot \frac{4}{9} = \frac{16}{81}$$