عبارات مركّبة

\[\displaystyle \left(\frac{5}{8}\right)^5\left(-\frac54\right)^{-5}\]

\[\displaystyle 9\left(\frac32\right)^{-2}-4\left(\frac23\right)^{-3}\times27^{-1}\]

\[\displaystyle \left[(-\sqrt5)^{-2}\right]^3\left[\frac{1}{2\sqrt5}^{-2}-(3\sqrt5)^2\right]\]