Đưa thừa số ra ngoài dấu
√(72a2b4 ) với a < 0.
√(72a2b4 ) = √((6ab2)2.2) = √2 |6ab2 | = -6√2ab2 (do a < 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.
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.