1 Susan didn't use to live in Paris

Did Susan use to live in Paris?

2 They used to commute from New York to London

Did they use commute from New York to London

3 My mother used to teach at the local school

My mother didn't use to teach at the local school

4 He used to cry a lot

Did he use to cry a lot

5 Jane didn't use to work for......

Did Jane use to work for.......

6 Jim used to own an old car

Jim didn't use to own an old car

7 This house used to belong to my family

Did this house use to belong to your family

8 My brother didn't use to go swimming when he was young

Did your brother use to go swimming when he was young

IV. Finish each of the incomplete sentences below in such a way thai it has the same meaning as the sentences above it.

1) The last time I saw her was in 2005.

→ I haven't.................................

2) He is writting a book on biology.

→ A book on biology................................................

3) A new bridge is going to be buit next year.

→ They are..................................................

4) I can't buy this car because it's expensive.

→ If this car.........................................................

5) They didn't pass the exam because of their laziness.

→ They didn't pass the exam because they...........................................

III. Complete the sentences, use the correct form or tense of the verbs in the brackets.

1- She (not meet) her mother since she (leave) for England to study.

2- A new school (build) near ourr school next year.

3- He (live) in this city since 2000.

4- Most of the NOKIA mobile phones (sell) in this shop.

5- This is the second time you (break) the glasses.

\(Tìm\) \(x:\)

d) \(x^2+3x-10=0\)

\(Bài\) \(2:\) \(Tìm\) \(x:\)

\(a\)\(\)) \(\left(2x-30\right)^2+\left(x+y-2\right)^2=0\)

2) Tìm x:

a) \(x^2+5x+6=0\)

⇒\(x^2+2x+3x+6=0\)

⇒\(\left(x^2+2x\right)+\left(3x+6\right)=0\)

⇒\(\left(x.x+2.x\right)+\left(3.x+3.2\right)=0\)

⇒\(x.\left(x+2\right)+3.\left(x+2\right)=0\)

⇒\(\left(x+2\right).\left(x+3\right)=0\)

⇒\(x+2=0\) \(hoặc\) \(x+3=0\)

\(+\))\(x+2=0\)                    \(+\))\(x+3=0\)

⇔\(x=-2\)                         ⇔\(x=-3\)

\(Vậy\) \(x\in\left\{-3;-2\right\}\)

c)\(x^2+6x+8=0\)

⇒ \(x^2+4x+2x+8=0\)

⇒ \(\left(x^2+4x\right)+\left(2x+8\right)=0\)

⇒ \(\left(x.x+4.x\right)+\left(2.x+2.4\right)=0\)

⇒ \(x.\left(x+4\right)+2.\left(x+4\right)=0\)

⇒ \(\left(x+4\right).\left(x+2\right)=0\)

⇒\(x+4=0\) \(hoặc\) \(x+2=0\)

\(+\)) \(x+4=0\)                   \(+\)) \(x+2=0\)

⇔\(x=-4\)                        ⇔\(x=-2\)

\(Vậy\) \(x\in\left\{-4;-2\right\}\)