Cho a,b,c>0 thỏa mãn a ²+b ²+c ²+(a+b+c) ² ≤4 Chứng minh $\frac{ab+1}{(a+b)²}$ + $\frac{cb+1}{(c+b)²}$ + $\frac{ac+1}{(a+c)²}$ ≥3

Choose the best answer.

I think you should buy _____  pack of mineral water instead. And you can also buy _____  snacks such as potato crisps, 3 kilos of mandarins, 2 kilos of apples, 3 bunches of bananas, ______  cookies and soft candies.

Choose the best answer.

We should decorate our living room with _____ orange banner. We also need ________  ribbons, balloons, party hats and costume.

Choose the best answer.

I think that ______ cauliflower is not enough for 3 people. Let’s buy one more.