tính sau z bạn

85(35-27)-35(85-27)=85.35-85.27-35.85+35.27

=(85.35-35.85)+(35.27-85.27)

=0+27.(35-85)

=27.(-40)

=-1080

3 x 3 = 9 lần

\(\Leftrightarrow\frac{\left(x^2-2\right):\left(x^2+6\right)\left(-3\right)}{x^2+1}=-\frac{3\left(x^2-2\right)}{\left(x^2+1\right)\left(x^2+6\right)}\)

\(\Rightarrow\frac{5}{x^2}+3+\frac{7}{x^2+5}=\frac{3x^4+27x^2+25}{x^2\left(x^2+5\right)}\)

\(\Rightarrow-\frac{3\left(x^2-2\right)}{\left(x^2+1\right)\left(x^2+5\right)}=\frac{3x^4+27x^2+25}{x^2\left(x^2+5\right)}\)

\(\Rightarrow-\frac{3\left(x^2-2\right)}{\left(x^2+1\right)\left(x^2+6\right)}=\frac{3x^4+27x^2+25}{x^2\left(x^2+5\right)}\)

\(\Rightarrow x\) không tồn tại với nghiệm thực

Sửa lỗi sai
1. You can play => go boating on the West Lake and it is very nice.
2. Have you been to the beaches in Nha Trang many time => times with my => your family?
Fighting!!!!!

II. Complete the sentences with the right form of the werbsin baracket
1. When it(rain) rains, I(stay) am staying at home.
2. What are you(drink) drinking? It(look) looks awful.
3. My brother(work) works for a foriegn company.
4. What does she(do) do on Sunday?
5. You(like) like summer.
6. I can't(hear) hear what you(say) are saying.
Fighting!!!!!

Put the adverbs in brackets in the correct position
1. I usually go to bed early on Sunday night.(usually)
2. They sometimes go for a walk in the park.(sometimes)
3. He isn't always reliablec.(always)
4. The traffic is often heavy in the rush hours.(often)
5. Does she never come back home often 11p.m?(never)
Fighting!!!!

Give the correct form of the words in brackets
- Most people want to live in a comfortable house. (comfort)
- Do you think all cars in the future will run on electricity?(electric)
Fighting!!!!!!

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