A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 one year ago
Help please!
If (x + k) is a factor of f(x), which of the following must be true?
f(k) = 0
f(–k) = 0
A root of f(x) is x = k.
A y intercept of f(x) is x = –k.
anonymous
 one year ago
Help please! If (x + k) is a factor of f(x), which of the following must be true? f(k) = 0 f(–k) = 0 A root of f(x) is x = k. A y intercept of f(x) is x = –k.

This Question is Closed

IrishBoy123
 one year ago
Best ResponseYou've already chosen the best response.1If (x + k) is a factor of f(x), then f(x) = (x+k).g(x) i think you can work it out from there

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0C??? because if f(x)=x+k) then wouldnt a root of f(x) x=k

phi
 one year ago
Best ResponseYou've already chosen the best response.0almost by definition of factor f(x)= (x+k)* g(x) what do we get when x= k ? putting in k for x we get f(k) = (k+k) * g(k) we don't know what g(k) is, but we do know what (k+k) is what do we get for f(k) ?

phi
 one year ago
Best ResponseYou've already chosen the best response.0do you see f(k) = (k+k) * g(k) becomes f(k) = 0 * g(k) and 0 * anything is 0
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.