Rút gọn các biểu thức sau: 25a2+3a với a≥0
√25a2 + 3a = 5|a| + 3a = 5a + 3a = 8a
(do a ≥ 0 nên |a| = a)
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.