Khử mẫu của biểu thức lấy căn$ab\sqrt{\frac{a}{b}};\frac{a}{b}\sqrt{\frac{b}{a}};\sqrt{\frac{1}{b}+\frac{1}{b^2}};\sqrt{\frac{9a^2}{36b}};3xz\sqrt{\frac{2}{xy}}$

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.