góc HAK = \(130^o\)

\(\widehat{xOy}\) và \(\widehat{HAK}\) bù nhau.

1. advised

2. refused 

3. admitted

4. denied

5. accused

6. confessed

7. begged

8. refused 

9. regretted

10. accused

1.works

2. Does - teach

to translate

\(4\left(2-x\right)^2+xy-2y=4\left(x-2\right)^2+y\left(x-2\right)\)

\(=\left(x-2\right)\left(4\left(x-2\right)+y\right)\)

\(=\left(x-2\right)\left(4x+y-8\right)\)