A community for students.
Here's the question you clicked on:
 0 viewing

This Question is Closed

satellite73
 3 years ago
Best ResponseYou've already chosen the best response.0solve what? this is a function. what do you want to do with it?

sugagal
 3 years ago
Best ResponseYou've already chosen the best response.0zero of the polynomial function

sandra
 3 years ago
Best ResponseYou've already chosen the best response.0ok, so you want to know what numbers multiply to get 36 but add to get 5

sandra
 3 years ago
Best ResponseYou've already chosen the best response.0so options for 36 = (1, 36), (2,18), (3,12), (6,6), (9,4), (12,3)... so on

sandra
 3 years ago
Best ResponseYou've already chosen the best response.0so (x9) * (x+4) distributes to get the right side of the equation

sandra
 3 years ago
Best ResponseYou've already chosen the best response.0so what values could x have to make the factored version multiple to zero? it's whatever makes the individual factored terms "0"  since anything multiplied by zero is 0

sandra
 3 years ago
Best ResponseYou've already chosen the best response.0so the first one is (x9) = 0 OR (x+4) = 0  those are the roots, solve for x in each case

sandra
 3 years ago
Best ResponseYou've already chosen the best response.0in the first case, x=9, since (99)=0, and 0*(x+4) = 0. So 9 is one root

sandra
 3 years ago
Best ResponseYou've already chosen the best response.0what is the other one? it's the number that makes (x+4) = 0

sandra
 3 years ago
Best ResponseYou've already chosen the best response.0exactly, so you have your two roots =). 9 and 4

sandra
 3 years ago
Best ResponseYou've already chosen the best response.0So the entire thought process is: 1. F(x)= x^2 5x36  find the roots  ok so that means what values of x makes F(X)=0 2. Oh crap, that's hard to just guess and check. I better factor it. 3. F(x) = (x9)*(x+4) //factored and equivalent 4. OK, so now it's easy to see. The function will equal zero when either (X9) =0 , OR (x+4) =0. 5. x=9, or x=4

sugagal
 3 years ago
Best ResponseYou've already chosen the best response.0ok, so is that the answer

sandra
 3 years ago
Best ResponseYou've already chosen the best response.0zero means "where does the function = 0". so you found both places

sugagal
 3 years ago
Best ResponseYou've already chosen the best response.0oh ok thank you very much for you help
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.