Rút gọn các biểu thức sau:
0,2-102.3+23-52
= 0,2.10.√3 + 2|√3 - √5|
= 2√3 + 2(√5 - √3)
= 2√3 + 2√5 - 2√3 = 2√5
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.