a/ Ta có: 24 = (22)2 = 42
42 = 42
Ta có: 23 = 8
32 = 9
Ta có: 24 = 42 ; 23 < 32
=> 24 + 23 < 42 + 32
b/ Ta có: 42 = 16; 42 - 30 = 16 + 1 = 17
52 = 25; 52 - 3 = 25 - 3 = 22
17 < 22 => 42 + 1 < 52 - 3
c/ Ta có: 53 : 5 = 53 : 51 = 53-1 = 52
52 = 52
=> 53 : 5 = 52
d/ Ta có: 3 . 33 = 34 = (32)2 = 92
92 = 92
=> 3 . 33 = 92
e/ Ta có: 24 = (22)2 = 42
42 = 42
=> 24 = 42
Ta có: a0 = 1 => 50 = 1000 = 1
=> 24 + 50 = 42 + 1000
f/ Ta có: 34 - 100 = 92 - 1 = 80
42 . 2 = (22)2 . 2 = 24 . 2 = 25 = 32
=> 34 - 100 > 42 .2
g/ 34 - 23 = 73
53 - 26 = 61
Vì 73 > 61 nên 34 - 23 > 53 - 26