√27a - 2√3a + 2√48y - 3√75y với a,y >0 √a/b + √ab + a/b √b/a với a,b <0 Giải chi tiết giúp mình với ạ, mình đang gấp lắm, mong mọi người giúp mình nha

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.