عبارات مركّبة

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

\[\displaystyle (2\sqrt2-\sqrt7)^{153}(2\sqrt2+\sqrt7)^{154}\]

\[\displaystyle (-\sqrt2)^5+(\frac12)^2\times3(\sqrt3)^3-\frac14(\sqrt2+4(\sqrt3)^2)\]

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