√2x2+3=9−x√2⇔√2x2+x√2−6=0⇔x2+x−3√2=0Δ=1+4.3√2=1+12√2⇒[x1=−1+√12√2+12x2=−1−√12√2+12.
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.