Bài 2. Chứng minh rằng với mọi số tự nhiên a, b ta có:
a) a ≤ a + b;
b) Nếu b ≠ 0 thì a ≤ ab...
Mathematics, 02.09.2021 17:10 claudiapineda860
Bài 2. Chứng minh rằng với mọi số tự nhiên a, b ta có:
a) a ≤ a + b;
b) Nếu b ≠ 0 thì a ≤ ab;
Answers: 3
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