a) $$6^3 + 2^4 = 6 \cdot 6 \cdot 6 + 2 \cdot 2 \cdot 2 \cdot 2 = 216 + 16 = 232$$.
б) $$(-3)^4 - (-1)^{11} = (-3) \cdot (-3) \cdot (-3) \cdot (-3) - (-1) = 81 - (-1) = 81 + 1 = 82$$.
в) $$5 \cdot (\frac{4}{5})^3 = 5 \cdot \frac{4^3}{5^3} = 5 \cdot \frac{64}{125} = \frac{5 \cdot 64}{125} = \frac{320}{125} = \frac{64}{25} = 2\frac{14}{25}$$.
Ответ:
a) 232
б) 82
в) $$\frac{64}{25} = 2\frac{14}{25}$$