Sử dụng từ gợi ý viết thành câu hoàn chỉnh

1. He/ stop/ smoke/ save/ money

2. It/difficult/ prevent/ people/ park here

Cho a,b,c thoả mãn: 1/a+1/b+1/c=1/a+b+c(a khác 0, b khác 0, c khác 0, a+b+c khác 0)

Tính B= (a^3+b^3)(b^3+c^3)(c^3+a^3)

Tìm x để P đạt giá trị nguyên dương

a, \(P=\frac{x^2-2x-5}{x^2+2x+2}\)

Dùng từ gợi ý viết thành câu hoàn chỉnh

1. Nam/spend/ most/ free time/ play soccer

2. You / can/ tell me/ best ways/ learn new word?

3. They/ going/ visit/homevillage/ weekend

4. She / have to/ housework/all day after/ mother/died

Viết lại câu sau theo gợi ý không làm thay đổi nghĩa của câu

1. We can't afford to buy the car

-> THe car..............

2. We arrived too late to see the film

-> We didn't................

Tìm

Min A= 3x^2+2x+7/x^2+2x+3

Max B= 2x^2-16x+29/x^2-6x+10

Min C = 6x^2-14x+29/x^2-2x+5

Max D = 5x^2+2x+2/x^2+x+1

Viết lại câu sao cho nghĩa k đổi

1. My wait in the queue has lasted forty minutes so far

-> I...............................

2. I'm asking you this question for the third time

-> THis is.......................................

3. She will never get in touch with him

->THis is the................................

4. When did you learn to drive?

-> How long is it......................

5. How long have they lived in this city?

-> How long ago..........................

Viết lại câu dùng used to hoặc didn't use to

1. I had a lot of money but I lost it all when my business failed

2. I quite like classical music now, although I wasn't keen on it when I was younger

3. I seem to have lost interest in my work

4. My brother had his hair cut short when he joined the army

Tìm a,b,c,d biết

a+b+c+d=2011 và 8a+4b+2c+d=2012

Cho đa thức f(x ) bậc 3, f(x) chia x-1 dư 2011, chia x-2 dư 2012. Tìm dư khi chia f(x) cho (x-1)(x-2)