A, X2 + 2X + 4 B, X2 - 4X + 4 C, X2 + 4X + 4 D, X2 - 4X + 4

34) (x + 2)

2

Bằng: A, x

2

+ 2x + 4 B, x

2

- 4x + 4 C, x

2

+ 4x + 4 D, x

2

- 4x + 4.