\(\begin{array}{l}80 - \left( {{{4.5}^2} - {{3.2}^3}} \right)\\ = 80 - \left( {4.25 - 3.8} \right)\\ = 80 - \left( {100 - 24} \right)\\ = 80 - 100 + 24\\ = \,\,\, - 20 + 24\\ = \,\,\,\,\,\,\,\,\,\,4\end{array}\)
\(\begin{array}{l}1997 - \left[ {10.\left( {{4^3} - 56} \right):{2^3} + {2^3}} \right].2005\\ = 1997 - \left[ {10.\left( {64 - 56} \right):8 + 8} \right].2005\\ = 1997 - \left[ {10.8:8 + 8} \right].2005\\ = 1997 - \,\,\,\,\,\,18.2005\\ = 1997 - 36090\\ = - 34093\end{array}\)
\(\begin{array}{l}35 - \left\{ {12 - \left[ { - 14 + \left( { - 2} \right)} \right]} \right\}\\ = 35 - \left( {12 + 16} \right)\\ = 35 - \,\,\,\,28\\ = 7\end{array}\)
\(\begin{array}{l}49 - \left( { - 54} \right) - 23\\ = 49 + 54 - 23\\ = 49 + 31\\ = 80\end{array}\)