:D?

tạm ổn

Theo mình nghĩ nha, là she was sitting hơi sai pk hong?

Chắc z là đc

câu she goes to the same school.... thì bạn bỏ chữ " the same school and" và thêm sau chữ class là " with me"

câu she was.... là thì HTHT nên bạn chia như thế này" she has sat behind me.... " nha vs lại nếu quá khứ đơn thì ko đc thêm ing nha.

Câu she was very kind.... bạn thay chữ was thành is nha và thay câu" and .... people" thành, friendly and funny

và còn nhiều lỗi nữa, mình sửa phần còn lại dưới đây bạn sửa vào nha:

After school, we always do homework together. We usually share happyness and sadness with each other. I think I'm lucky because I have a good friend her. I hope in the future we will be best friend forever!

I/ supply the correct verb form

1. She asked me where i (buy)....BOUGHT........that car

2. She asked him where he (be)......WAS.....from.

3. They said that they (buy)....WOULD BUY.......that house the following month.

4. They said that they (sell).........HAD SOLD..their house

5. I asked them if they (pass).....HAD PASSED.....the final exam

6. I asked him if he (can).....COULD....help me

1. She asked me where i (buy).......bought.....that car

2. She asked him where he (be)....was.......from.

3. They said that they (buy).....would buy......that house the following month.

4. They said that they (sell)......had sold.....their house

5. I asked them if they (pass)...had passed......the final exam

6. I asked him if he (can)...could......help me

I/ supply the correct verb form

1. She asked me where i (buy)......had bought......that car

2. She asked him where he (be)......was.....from.

3. They said that they (buy)......would buy.....that house the following month.

4. They said that they (sell)......had sold.....their house

5. I asked them if they (pass).....had passed.....the final exam

6. I asked him if he (can).....could....help me

a: Xét ΔAHB vuông tại H và ΔCHA vuông tại H có

góc HAB=góc HCA

=>ΔAHB đồng dạng với ΔCHA

b,c: góc FAE+góc FHE=180 độ

=>FAEH nội tiếp

=>góc HFE=góc HAE=góc C

Xét ΔHFE vuông tại H và ΔHCA vuông tại H có

góc HFE=góc HCA

=>ΔHFE đồng dạng với ΔHCA

=>HF/HC=HE/HA

=>HF*HA=HC*HE

Chuyển các câu sau về câu bị động:

1)She didn't do her homework last night

-> Her homework wasn't done by her last night?

2)What did she read yesterday?

-> What was read by her yesterday?

3)They teach me English

-> I am taught English by them.

4)She doesn't plant trees in the garden

-> Trees aren't planted in the gerden by her.

5)They donated money to street children

-> Money was donated to street children by them.

ĐK: \(x\ge\dfrac{5}{3}\)

Ta có: \(\sqrt{2x+5}=2+\sqrt{3x-5}\)

      \(\Leftrightarrow2x+5=4+3x-5+4\sqrt{3x-5}\)

      \(\Leftrightarrow6-x=4\sqrt{3x-5}\)                    ĐK: x≤6

      \(\Leftrightarrow36-12x+x^2=48x-80\)

      \(\Leftrightarrow x^2-60x+116=0\)

      \(\Leftrightarrow\left(x-2\right)\left(x-58\right)=0\)

      \(\Leftrightarrow\left[{}\begin{matrix}x=2\\x=58\end{matrix}\right.\)

So với điều kiện thì phương trình có nghiệm duy nhất là x = 2

\(ĐK:x\ge\dfrac{5}{3}\\ PT\Leftrightarrow\left(\sqrt{2x+5}-3\right)-\left(\sqrt{3x-5}-1\right)=0\\ \Leftrightarrow\dfrac{2x-4}{\sqrt{2x+5}+3}-\dfrac{3x-6}{\sqrt{3x-5}+1}=0\\ \Leftrightarrow\left(x-2\right)\left(\dfrac{2}{\sqrt{2x+5}+3}-\dfrac{3}{\sqrt{3x-5}+1}\right)=0\\ \Leftrightarrow\left[{}\begin{matrix}x=2\left(tm\right)\\\dfrac{2}{\sqrt{2x+5}+3}=\dfrac{3}{\sqrt{3x-5}+1}\left(1\right)\end{matrix}\right.\)

\(\left(1\right)\Leftrightarrow2\sqrt{3x-5}+2=3\sqrt{2x+5}+9\\ \Leftrightarrow2\sqrt{3x-5}=7+3\sqrt{2x+5}\\ \Leftrightarrow4\left(3x-5\right)=49+9\left(2x+5\right)+42\sqrt{2x+5}\\ \Leftrightarrow12x-20=49+18x+45+42\sqrt{2x+5}\\ \Leftrightarrow-6x-144=42\sqrt{2x+5}\)

Vì \(x\ge\dfrac{5}{3}>0\Leftrightarrow-6x-144< 0< 42\sqrt{2x+5}\)

Do đó (1) vô nghiệm

Vậy PT có nghiệm \(x=2\)