Question

(2³)² - 42 - ( 1 ) ²
______
( 2 )

Answer 1

$(2 ^{3} ) ^{2} -42- \frac{(1)} 2^{2} ^$

$2^{6} -42- \frac{1}{2} \\ \\ 64-42- \frac{1}{2} \\ \\ 22-0,5=\boxed{21.5}$