عبارات مركّبة

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

\[\displaystyle \sqrt{3^{-1}}\times\sqrt{21}-\frac{(\sqrt7)^{-2}}{(\sqrt7)^{-5}}\]

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

\[\displaystyle \left(\frac{2}{\sqrt3}\right)^{-2}\times3^{-1}\]