4 + 3x với x < 0
A.(1 - √3x)(1+ √3x)
B.(1 - √-3x)(1+ √-3x)
C.(2 - √3x)(2+ √3x)
D.(2 - √-3x)(2+ √-3x)

x2 – 2
A.(x - √2)(x + √2)
B.(x - √3)(x + √3)
C.(2x - √2)(2x + √2)
D.(x - 2)(x + 2)

A.12
B.14
C.16
D.18

A.0
B.1
C.2
D.3

A.x = 1
B.x > 1
C.x < 1
D.x ≥ 1

A.x > 1
B.x < 1
C.0 < x < 1
D.x ≠ 1

A.x ≥
B.x ≤ 1
C.x ≤
D.x >

(2 - √5)2
A.9 + 4√5
B.9 - 4√5
C.3 - 4√5
D.3 + 4√5

(3√5 – 1)(3√5 + 1)
A.42
B.43
C.44
D.45

(5√2 – 3)(5√2 + 3)
A.41
B.42
C.43
D.44