✏ [tex] [(\frac{1}{2} ){}^{ - 2} ]{}^{ - 2} = [(\frac{2}{1} ) {}^{ {2} } ] {}^{ - 2} = (\frac{4}{1} ) {}^{ - 2} = (\frac{1}{4} ) {}^{2} = \frac{1}{16} [/tex] ✔
