1. A lot of money...last year
a)spent b)is spent c)was spend
2. You had a good time there,...?
a)hadn t you b)had you c)didn t you
3. I am a bad singer,...?
a)aren t I b)isn t it c)don t I
4. This is a very good idea,...&
a)isn t this b)isn t it c)isn t there
5. The garden looks...
a)nicely b)nice c)well
6. They had to run fast,...?
a)hadn t they b)had they c)didn t they
7. John is a...speaker
a)slow b)slowly c)well
8. Never listen...him
a)to b)- c)at
9. What is she looking...?
a)to b)- c)at
10. Don t laugh...him
a)on b)- c)at

оля2053 оля2053    2   16.04.2020 19:12    7

Ответы
Zhanelka1028 Zhanelka1028  16.04.2020 19:30

ОДЗ

2x-1≥0

2х≥1

х≥0,5

х-2≥0

х≥2

х∈[2; +∞)

\sqrt{2x-1}=(x-2) \\  \\ (  \sqrt{2x-1})^2=(x-2)^2 \\  \\ 2x-1= x^{2} -4x+4 \\  \\  x^{2} -6x+5=0 \\  \\ D=6^2-4*5=16 \\  \\ x_1= \frac{6-4}{2}=1 \\  \\ x_2= \frac{6+4}{2}=5  

x₁=1 не подходит по ОДЗ

ответ х=5

Объяснение:

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