Предмет: Алгебра, автор: arhe0411

СРОЧНО!!! ДАЮ 100 БАЛЛОВ!!! НУЖНО РЕШИТЬ ИРРАЦИОНАЛЬНОЕ УРАВНЕНИЯ!!! (задание внизу!!!)​

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Ответы

Автор ответа: byzovskiy29080817
0

Объяснение:

1) √x²-1=2

Во всех этих уравнениях сокращается корень при возведении в квадрат;

x²-1=4

x²=5

x=±√3


arhe0411: а дальше?
arhe0411: их 5
arhe0411: помоги пожалуйста с остальными
arhe0411: тут реши
arhe0411: либо 100 баллов заберу
arhe0411: по совести делай хоть бро, 5 значит 5 и нужно сделать
Автор ответа: mxtur4
2

Ответ:

1) 17

2) -2; 2

3) \displaysyle -\sqrt{5}; \displaysyle \sqrt{5}

4) \displaystyle\frac{10}{7} =1\frac{3}{7}

5) 1; 4

Объяснение:

1) \displaystyle \sqrt{x-16} =1

x-16=1

x=16+1

x=17

2) \displaystyle \sqrt{25x^{2} } =10

5×|x|=10

|x|=10:5

|x|=2

x1=2; x2=-2

3) \displaystyle\sqrt{x^2-1} =2

\displaystyle\sqrt{x^2-1}^2=2^2

x²-1=4

x²=4+1

x²=5

x=±\sqrt{5}

4) \displaystyle\sqrt{7x-1} =3

\displaystyle\sqrt{7x-1}^2=3^2

7x-1=3²

7x-1=9

7x=9+1

7x=10

x=10:7

\displaystyle x=\frac{10}{7} = 1\frac{3}{7}

5) \displaystyle\sqrt{x^2-5x+4} =0

x²-5x+4=0

x²-x-4x+4=0

x(x-1)-4(x-1)=0

(x-1)(x-4)=0

x-1=0

x-4=0

x1=1

x2=4


mxtur4: Точно)
arhe0411: окей, спасибо, смотри ещо сможешь помочь? я когда выложу задание, тебе напишу
mxtur4: Да
arhe0411: у тебя есть телеграм?
arhe0411: или инста?
mxtur4: Да
mxtur4: Кинь тг в личку. Я запрос кинул тебе
arhe0411: arhe_1808 - вот телеграм
arhe0411: попробуй написать?
arhe0411: !!!
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