46. A) VÌ ABC  DEG 13   ABC  DEG  13 K  ABC  DEG  13 K (V...

1.46. a) Vì abc  deg 13   abc  deg  13 k  abc  deg  13 k (v ới k  N )

Do v ậy: ^{abc deg  1000. abc  deg  1000. deg}  ^{ 13 k}  ^{ deg}

 ^{1001.deg 1000.13. k}  ¹³

  

b) ^{abc  100 a  10 b   c 98 a  7 b }  ^{2 a  3 b  c} 

V ậy nếu abc 7 thì  ^{2 a  3 b  c}   ⁷