Предмет: Алгебра, автор: Аноним

Помогите с заданием оно на фоте

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Автор ответа: Аноним

0

ОДЗ $x+1 geq 0 \ x geq -1$
$(sqrt{3x+7})^2=(x+1)^2 \ 3x+7=x^2+2x+1 \ x^2-x-6=0$
Находим дискриминант
$D=b^2-4ac=1+24=25 \ \ x_1= frac{1-5}{2} =-2 \ x_2= frac{1+5}{2} =3$
$x=-2$ не удовлетворяет ОДЗ

Ответ: $x=3$

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2. When did he begin to draw?
3. At what age did he become a student at the Royal Academy of Arts ?
4. What kind of experiments did he make?
5. He often went abroad, didn’t he?
6. Prove that Turner lead a modest life.
7. Name the most famous of Turner’s paintings.
8. Where are his paintings exhibited?

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