As I am the oldest child, I have to ______ my three little mischievous brothers.

A. take off  

B. look for  

C. look after         

D. take after

The woman asked __________ get lunch at school.

A. can the children

B. whether the children could

C. if the children can

D. could the children

Ta có : \(12^{30}:36^{15}\) = 1073741824

Mà lại có : \(4^{15}\) = 1073741824

Suy ra thương của \(\dfrac{12^{30}}{36^{15}}\) băng \(4^{15}\)

CHÚC BẠN HOK TỐT !

\(\sqrt{\dfrac{1}{9}+\dfrac{1}{16}}\) = \(\sqrt{\dfrac{25}{144}}\)

= \(\sqrt{\dfrac{5}{12}}\)

Suy ra đáp án C là đúng !

CHÚC BẠN HOK TỐT !