Предмет: Алгебра, автор: Лиза1821

2х в квадрате +х + 16=0

Ответы

Автор ответа: life5599
2
а=2,b=1,c=16
D=b^2-4ac
D=(1)^2-4*2*16=1-128=-127
D<0-нет корней
Ответ: нет решения
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1. The children climbed under/over the wall to escape from the angry gardener.
2. She walked quickly past/along the shops without looking in the windows.
3. The current is very strong. It would be dangerous to swim through/across this river.
4. She got dressed quickly and ran up/down the stairs to the kitchen.
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7. We tried to push our way through/towards the crowds to see our favourite singer.
8. There was no way to cross the lake, so we had to walk through/round it.
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10. I put the bags onto/into the table, then I put the shopping away.
11. You will see the post office on your right when you go through/round the corner.
12. She looked along/into her crystal ball and told the girl her fortune.

Fill in the gaps with the correct preposition.
1. There is a man standing ...at... the entrance to the museum.
2. There was a note … the top of the page I was reading which I couldn't understand.
3. The phone rang … the middle of the night, waking everyone in the house.
4. It's very tiring to spend eight hours checking information … a computer screen.
5. Yesterday was a lovely day and we could see children playing … the beach.
6. I can't find the place you're talking about … the map.
7. There's a new shop … the corner of the street.
8. Jenny is coming … the six o'clock bus. I'm meeting her … the bus station.​