Giải thích các bước giải:
b) ( 3 . 4² . $2^{7}$ )² : ( 3² . $2^{20}$ )
= ( 3 . 16 . 128 )² : ( 9 . 1048576 )
= ( 48 . 128 )² : 9437184
= 6144² : 9437184
= 37748736 : 9437184
= 4
c) ( 2³ . $9^{4}$ + 9³ . 45 ) : ( 9² . 10 - 9² )
= ( 8 . 6561 + 729 . 45 ) : ( 81 . 10 - 81 )
= ( 52488 + 32805 ) : ( 810 - 81 )
= 85293 : 729
= 117
d) $24^{4}$ : $3^{4}$ - $32^{12}$ : $16^{12}$
= 4096 - 4096
= 0
e) ( $2^{9}$ . 3 + $2^{9}$ . 5 ) : $2^{12}$
= $2^{9}$ . ( 3 + 5 ) : $2^{12}$
= $2^{9}$ . 8 : $2^{12}$
= $2^{9}$ . 2³ : $2^{12}$
= $2^{12}$ : $2^{12}$
= 1