Răspuns:
[(9²-2⁴*5):1+5⁹:(5²)⁴]*2²=
[(81-16·5):1+5⁹:5²ˣ⁴]·4=
[(81-80):1+5⁹⁻⁸]·4=
(1:1+5¹)·4=
(1+5)·4=
6·4=
24