Предмет: Математика, автор: Аноним

Раскрыть скобки
(х+3)²

Ответы

Автор ответа: topaz22
2

Відповідь:

x^2 + 6x + 9

Покрокове пояснення:

(a + b)^2 = a^2 + 2ab + b^2

(x+3)^2 = x^2 + 2*x*3 + 3^2 = x^2 + 6x + 9

Автор ответа: bodyatop9323
2

Ответ:

смотри фото

Пошаговое объяснение:

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Do you ever get the feeling that your life is just about to begin? I'm feeling like that right now as my younger brother Dima and I are standing in London's Heathrow International ' Airport. Dima and I are spending the summer at an American summer camp. Yes, that's right. London is just a stopover in our trip. It's also the meeting point for some campers who are flying to the USA from Europe.
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The idea for our great trip started with a film I saw about a summer camp in America one winter evening. That's when I got the dream to go to one of those camps. Normally I do the same things every summer: I spend June with my granny in Saratov, then in July my parents and I go to Turkey and in August I get a lot of time to go out with my friends and get ready for the next school year. If you say, "That's not so bad," I'll tell you, "It's boring." It took me two years to make my dream happen — I found the camp, talked to my parents, saved up and then found out that I still didn't have enough money. Then I talked to my parents again. Finally, Dad offered to pay for most of the trip on condition that Dima could come with me! Dima is fourteen and this year our parents had nothing but trouble with him. He got involved with some bad kids at school, so no wonder Mum and Dad wanted to send him as far away from home as possible. Call me a bad sister, but I wasn't excited. I didn't want to spend this summer babysitting my bro, but that was the deal with Dad, so I had to live with it.
After all, it was going to be my perfect summer anyway, so I knew nothing could spoil it.

When we arrived in London two days ago, I was ready for my big adventure. I wanted to visit new places, improve my English and make new friends. Our mother's old friend works in London, so she gave us the opportunity to see this great city. We enjoyed every minute and didn't feel homesick at all. After all, London is only about a four-hour flight from Moscow. It's round the corner in comparison to California. But now as we are waiting in Heathrow, I'm starting to ask myself some scary questions. Will I be able to understand American English? What if I don't make any new friends? Will there be any wild animals in the woods around our camp? What if our counsellor doesn't turn up today?

Dima: Are you OK, Lisa? You're not acting like yourself.
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