Chứng minh các đẳng thức sau

----- Nội dung dịch tự động từ ảnh -----
```
D.19
(1) 4^4 = 8^2;
(2) 8^7 = 16^3;
(3) 10^16 = 32^2;
(4) 10^10000 = 1000^4;
(5) 4^4 = (1/4)^-2;
(6) 8^8 = 32^6;
(7) 8^9 = 32^7;
(8) 8^8 = 32^4;
(9) 12^6 = 64^2;
(10) 4^4 = (1/16)^-2;
(11) 32^2 = (1/32)^-2;
(12) 16^1 = (1/16)^-1;
(13) 8^2 = (1/8)^-1;
(14) (1/4)^-3 = (1/8)^-2;
(15) (1/16)^-4 = (1/32)^-3;
(16) (1/16)^3 = (1/4)^-6;
(17) (1/16) = (1/8)^-2;
(18) (1/16)^-1 = (1/32)^9;
(19) (1/32) = (1/27)^-1;
(20) (9/27) = (1/27)^-2;
(21) (4/9) = (8/27)^-2;
(22) (4/27) = (1/27)^-3;
(23) (4/9) = (1/27)^4;
(24) (4/9) = (8/27)^2;
```