Rút gọn:
2x2-y23x+y22với≥0,y≥0 và x≠y
(có |x + y| = x + y do x + y > 0 vì x ≥ 0, y ≥ 0 và x ≠ y)
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.
We should decorate our living room with _____ orange banner. We also need ________ ribbons, balloons, party hats and costume.
I think that ______ cauliflower is not enough for 3 people. Let’s buy one more.