Ответ:

  1. \(9=3^2\).
  2. \(-27=(-3)^3\).
  3. \(6{,}25=2{,}5^2\).
  4. \(0{,}064=0{,}4^3\).
  5. \(-3\frac{3}{8}=-\frac{27}{8}=\left(-\frac{3}{2}\right)^3\).
  6. \(5\frac{4}{9}=\frac{49}{9}=\left(\frac{7}{3}\right)^2\).

Ответ: \(9=3^2\); \(-27=(-3)^3\); \(6{,}25=2{,}5^2\); \(0{,}064=0{,}4^3\); \(-3\frac{3}{8}=\left(-\frac{3}{2}\right)^3\); \(5\frac{4}{9}=\left(\frac{7}{3}\right)^2\).