Chứng minh các đẳng thức sau:$\frac{a+b}{b^2}\sqrt{\frac{a^2{b}^4}{a^2+2ab+b^2}}=\left|a\right| với a+b>0 và b\ne 0$

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.