Question

($( 2^{5} : 2^{7}) ( 2^{7} )^{3}$

Answer 1

$(2^{5} : 2^{7} ). (2^{7}) ^{3} \\ \\ (2^{5-7} ). 2^{7.3} \\ \\ 2^{-2} . 2^{21} \\ \\ 2^{-2+21} =\boxed{\boxed{ 2^{19} }}\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ ok$