Respuesta :
A root of f(k) is x=k. Option C is correct.The numbers we're multiplying are factors of the product since they're divisible by it.
What is a factor?
A number is obtained by dividing another number by itself without leaving a leftover. To put it another way, if multiplying two whole numbers produces a product,
The factor of the f(x) is given as;
[tex]\rm (x+k)[/tex]
The factors satisfy the equation as;
[tex]\rm (x+k)=0 \\\\ x=-k[/tex]
Hence one root of f(x) is x = -k, The correct answer is option C.
To learn more about the factors refer to the link;
https://brainly.com/question/24182713