عبارات مركّبة

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

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

\[\displaystyle \sqrt5^{-1}\left(\frac1{\sqrt5}+\sqrt5^{-3}\right)\]

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