Answer:
The answer is option 4.
Step-by-step explanation:
You have to elaborate the expression and factorize :
[tex] {x}^{2} - 6x + 8[/tex]
[tex] = {x}^{2} - 2x - 4x + 8[/tex]
[tex] = x(x - 2) - 4(x - 2)[/tex]
[tex] = (x - 4)(x - 2)[/tex]
