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1.     I'm just about to give up this diet because it's not working at all.                                        pointI'm ……………………… up this diet because it's not working at all2.     "Ian took the money, not his brother Dylan," Susan said.                                                     itAccording to Susan, ………………………………. took the money, not Dylan.3.     "I can't stand what his assistant said about me," said Jenny.                                     objectedJenny ……………………………………. the...
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1.     I'm just about to give up this diet because it's not working at all.                                        point

I'm ……………………… up this diet because it's not working at all

2.     "Ian took the money, not his brother Dylan," Susan said.                                                     it

According to Susan, ………………………………. took the money, not Dylan.

3.     "I can't stand what his assistant said about me," said Jenny.                                     objected

Jenny ……………………………………. the assistant said about her.

4.     If you really want to spend the whole night studying, there's nothing I can do.      insist

If you ………………………………., the whole night, there's nothing I can do.

5.     If  Tom is having so many problems at school, maybe some private tuition would help him.  from

Maybe Tom would …………………………………….  tuition if he's having so many problems at school.

6.      We need to run or the train will leave before we get there.                                            time

Unless we run, the train …………………………………  we get there

7.     Patients have benefited greatly from this treatment.                                     good

This treatment  has…………………………………………                           

8.     When people speak down to my sister, she hates it.                                                  being

My sister hates ……………………………  to like that.

9.     You should have spoken to Meg sooner.                                                                   only

If ………………………………………………….. sooner

10.   The flawed diamond was much cheaper than the perfect one.                                 cost

The perfect diamond ………………………………….

 

2
19 tháng 6 2021

1.     I'm just about to give up this diet because it's not working at all.                                        point

I'm ……… on the point of giving.……………… up this diet because it's not working at all

2.     "Ian took the money, not his brother Dylan," Susan said.                                                     it

According to Susan, ……………… it was Ian who.………………. took the money, not Dylan.

3.     "I can't stand what his assistant said about me," said Jenny.                                     objected

Jenny ……………… objected to what……………………. the assistant said about her.

4.     If you really want to spend the whole night studying, there's nothing I can do.      insist

If you …………insist on studying……………………., the whole night, there's nothing I can do.

5.     If  Tom is having so many problems at school, maybe some private tuition would help him.  from

Maybe Tom would ………………benefit from some private…………………….  tuition if he's having so many problems at school.

6.      We need to run or the train will leave before we get there.                                            time

Unless we run, the train …………will have left by the time………………………  we get there

7.     Patients have benefited greatly from this treatment.                                     good

This treatment  has…benefited people greatly……………………………………                           

8.     When people speak down to my sister, she hates it.                                                  being

My sister hates ………being spoken down……………………  to like that.

9.     You should have spoken to Meg sooner.                                                                   only

If …………olny you had spoken to Meg ……………………………………….. sooner

10.   The flawed diamond was much cheaper than the perfect one.                                 cost

The perfect diamond ……cost more than the flawed one…………………………….

19 tháng 6 2021

 

1.     I'm just about to give up this diet because it's not working at all.                                        point

I'm ……on the point of giving… up this diet because it's not working at all

2.     "Ian took the money, not his brother Dylan," Susan said.                                                     it

According to Susan, ……it was Lan who……. took the money, not Dylan.

3.     "I can't stand what his assistant said about me," said Jenny.                                     objected

Jenny ……objected to what………. the assistant said about her.

4.     If you really want to spend the whole night studying, there's nothing I can do.      insist

If you ………insist on studying…., the whole night, there's nothing I can do.

5.     If  Tom is having so many problems at school, maybe some private tuition would help him.  from

Maybe Tom would ………benefit from some private…….  tuition if he's having so many problems at school.

6.      We need to run or the train will leave before we get there.                                            time

Unless we run, the train ……will have left by the time……  we get there

7.     Patients have benefited greatly from this treatment.                                     good

This treatment  has………good effects on patients………                           

8.     When people speak down to my sister, she hates it.                                                  being

My sister hates …being spoken down…  to like that.

9.     You should have spoken to Meg sooner.                                                                   only

If …………only you'd spoken to Meg…….. sooner

10.   The flawed diamond was much cheaper than the perfect one.                                 cost

The perfect diamond ……cost a lot more than the flawed one…….

 

13 tháng 12 2017

\(\dfrac{1}{1-x}\)+\(\dfrac{1}{1+x}\)+\(\dfrac{2}{1+x^2}\)+\(\dfrac{4}{1+x^4}\)+\(\dfrac{8}{1+x^8}\)+\(\dfrac{16}{1+x^{16}}\)

=

=\(\dfrac{4}{1-x^4}\)+\(\dfrac{4}{1+x^4}\)+\(\dfrac{8}{1+x^8}\)+\(\dfrac{16}{1+x^{16}}\)

=\(\dfrac{8}{1-x^8}\)+\(\dfrac{8}{1+x^8}\)+\(\dfrac{16}{1+x^{16}}\)

=\(\dfrac{16}{1-x^{16}}\)+\(\dfrac{16}{1+x^{16}}\)

=\(\dfrac{32}{1-x^{32}}\)

8 tháng 8 2015

a) Ta có I 2x - 1 I = 2015

=> 2x-1=2015 hoặc 2x-1=2015

+,Th1: 2x-1=2015

             2x=2015+1

             2x=2016

              x=2016:2

             x=1008

+,Th2: 2x-1=-2015

              2x=-2015+1

             2x=-2014

              x=-2014:2

             x=-1007

Vậy x=1008, x=-1007

 

 

|x-1|<5

th1: x-1<5=> x<6

th2: x-1<-5=> x<-4

vậy x <6 hoặc<-4

|x-1|>5 cũng tương tự như thế

còn mấy câu khác Nguyễn Diệu Thảo làm thế chắc bạn cũng biết cách làm rồi

L_I_K_E CHO MÌNH NHA!!!

a) Chương trình bị lỗi

b) Chương trình bị lỗi

c) Chương trình bị lỗi luôn

26 tháng 7 2019

I I  là dấu giá trị tuyệt đối nhé

26 tháng 7 2019

|7 + 5x| = 1 - 4x

=> \(\orbr{\begin{cases}7+5x=1-4x\left(đk:x\le\frac{1}{4}\right)\\7+5x=4x-1\left(đk:x\ge\frac{1}{4}\right)\end{cases}}\)

=> \(\orbr{\begin{cases}7-1=-4x-5x\\7+1=4x-5x\end{cases}}\)

=> \(\orbr{\begin{cases}6=-9x\\8=-x\end{cases}}\)

=> \(\orbr{\begin{cases}x=-\frac{2}{3}\left(tm\right)\\x=-8\left(ktm\right)\end{cases}}\)

|4x- 2x| + 1 = 2x

=> |4x2 - 2x| = 2x - 1

=> \(\orbr{\begin{cases}4x^2-2x=2x-1\left(đk:x\ge\frac{1}{2}\right)\\4x^2-2x=1-2x\left(đk:x\le\frac{1}{2}\right)\end{cases}}\)

=> \(\orbr{\begin{cases}4x^2-2x-2x+1=0\\4x^2-2x-1+2x=0\end{cases}}\)

=> \(\orbr{\begin{cases}\left(2x-1\right)^2=0\\4x^2-1=0\end{cases}}\)

=> \(\orbr{\begin{cases}2x-1=0\\x^2=\frac{1}{4}\end{cases}}\)

=> \(\orbr{\begin{cases}x=\frac{1}{2}\\x=\pm\frac{1}{2}\end{cases}}\)(tm)

Vậy ...

31 tháng 8 2023

???

6 tháng 4 2019

#It's the moment when you're in good mood, you accidentally click back =.=

1) Calculate

\(P=1\frac{1}{3}.1\frac{1}{8}.1\frac{1}{15}....1\frac{1}{63}.1\frac{1}{80}\)

\(=\frac{4}{3}.\frac{9}{8}.\frac{16}{15}....\frac{64}{63}.\frac{81}{80}\)

\(=\frac{2.2}{1.3}.\frac{3.3}{2.4}.\frac{4.4}{3.5}....\frac{8.8}{7.9}.\frac{9.9}{8.10}\)

\(=\frac{2.9}{10}=\frac{9}{5}\)

7 tháng 8 2019

ta có: 10010 + 1 > 10010 - 1

⇒ A = \(\frac{100^{10}+1}{100^{10}-1}< \frac{100^{10}+1-2}{100^{10}-1-2}=\frac{100^{10}-1}{100^{10}-3}=B\)

vậy A < B

19 tháng 12 2015

a) |2x +1| = 7

Th1: 2x + 1 = 7 

<=> x  = 3

Th2: 2x + 1 = -7 

<=> x = -4 

15 tháng 6 2018

\(1)\) Ta có : 

\(\left|2x-1\right|\ge0\)

\(\Leftrightarrow\)\(A=\left|2x-1\right|+8\ge8\)

Dấu "=" xảy ra \(\Leftrightarrow\)\(\left|2x-1\right|=0\)

\(\Leftrightarrow\)\(2x-1=0\)

\(\Leftrightarrow\)\(2x=1\)

\(\Leftrightarrow\)\(x=\frac{1}{2}\)

Vậy GTNN của \(A\) là \(8\) khi \(x=\frac{1}{2}\)

Chúc bạn học tốt ~ 

15 tháng 6 2018

\(2)\) Ta có : 

\(B=\left|x-3\right|+\left|x-9\right|-1\)

\(B=\left|x-3\right|+\left|9-x\right|-1\ge\left|x-3+9-x\right|-1=\left|6\right|-1=6-1=5\)

Dấu "=" xảy ra khi và chỉ khi \(\left(x-3\right)\left(9-x\right)\ge0\)

Trường hợp 1 : 

\(\hept{\begin{cases}x-3\ge0\\9-x\ge0\end{cases}\Leftrightarrow\hept{\begin{cases}x\ge3\\x\le9\end{cases}\Leftrightarrow}3\le x\le9}\)

Trường hợp 2 : 

\(\hept{\begin{cases}x-3\le0\\9-x\le0\end{cases}\Leftrightarrow\hept{\begin{cases}x\le3\\x\ge9\end{cases}}}\) ( loại ) 

Vậy GTNN của \(B\) là \(5\) khi \(3\le x\le9\)

Chúc bạn học tốt ~