Предмет: Алгебра, автор: Tnazarov

Решите уравнения (х-6)^2=(х-3)^2. (Х-5)^2+(х+4)^2=2х^2

Ответы

Автор ответа: MashaBaggins

1) (x-6)²=(x-3)²
x²-12x+36=x²-6x+9
x²-x²-12x+6x=9-36
-6x=-27
x=4,5
2) (x-5)²+(x+4)²=2x²
x²-10x+25+x²+8x+16=2x²
x²+x²-2x²-10x+8x=-25-16
-2x=-41
x=20,5

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: Английский язык, автор: Kvhddj

добавьте в пропуск слова
'If you want to visit a beautiful location, Niagara Falls is the place for you. I went there last month with my friend Tina. We .... to go on trips all the time in the past, and it had been a while since our last one. So, i was thrilled when she called and told me that she needed to get 3...... for a few days and asked oif i wanted to go somewhere with her. Of course i did! We 4........ searching for a scenic location and decided that Niagara Falls 5..... be the perfect destination. We were going 6......... travel by train from Buffalo, but in the end we decided to go by car and enjoy the journey. We 7...... heard that the panoramic view is better on the Canadian side, so we crossed the Rainbow Bridge and drove over to Ontario. Once there, we went on a boat ride that took us right into the mists of the stunning falls. Unbelievable ! We had an amazing weekend and i think i will 8 ..... visiting Niagara Falls again in the near future.

6 лет назад

Предмет: География, автор: Аноним

6 лет назад

Предмет: Английский язык, автор: aliya215

Срочно помогите пожалуйста Make sentences from the words in brackets. Sometimes the verb is active,
1 There's somebody behind us. (We / follow). We're being followed.
2. This door is a different colour, isn't it? (you / paint?) Have you painted it
3 My bike has disappeared. (It / steal!) It
4 My umbrella has disappeared. (Somebody / take) Somebody
5 A neighbour of mine disappeared six months ago.
(He/not/sec / since then) He
6 I wonder how Jessica is these days.
(l/not/ see / for ages)
7 A friend of mine was stung by a bee recently.
(you/ever / sting/bee?)
you
8 The bridge was damaged recently.
(It / repair / at the moment) It
9 Tom's car was stolen recently.
(It / not/find / yet) ........
10 I went into the room and saw that the table and chairs were not in the same
(The furniture / move) The
of using somebody', 'they' etc., write a passive sentence.

6 лет назад

Предмет: Математика, автор: Аноним

при закладки сада третьеклассники посадили 96 саженцев , а второклассники-78. Каждый третьеклассник посадил по 3 саженца, а каждый второклассник по 2 саженца. Сколько всего учеников этих 2-х классов работало на посадки саженцев?

9 лет назад

Предмет: География, автор: ghjvtyzujdjhzn

Опишите 2 словами рельеф 1) субэкваториального пояса Южной Америки 2) экваториальный пояс Южной Амирики 3) субэкваториальный пояс Южной Америки 4) тропический пояс Южной Амирики 5) субтропический пояс Южной Америки 6) умеренный пояс Южной Америки.Если кому то не понятно то в р.т по географии 7 класс Домагацких на стр 16 номер 4 таблица там все написано.

9 лет назад