Bài tập rút gọn +)x.(x^2+x-1) 2x^2(x^3-x+2) -x(x-2x^2) (2-x)(x^2-3x+4) (2x^2-2x+3).x^2 (2-x)(x^2-3x+1) (2x-y)(3x+1)

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.