Question

What are the factors of x2 + 4x + 3?

A X3 - 1
B
4x2 + 3
C (x - 3)(x + 1)
D (x+3)(x + 1)

Answer 1

The answer is D (x+3) (x+1)

Answer 2

D. (X + 3 ) ( X +1 )

process:

x² + 4x + 3

= x² + (3 + 1)x +3

= x² + 3x + x + 3

= X (x+3) + 1 (X+3)

= (X + 3 ) ( X +1 )