A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 one year ago
Looking at the rational function f of x equals the quantity x minus one times the quantity x plus two times the quantity x plus four all divided by the quantity x plus one times the quantity x minus two times the quantity Bella says that the function is defined at x = –1, x = 2, and x = 4. Edward says that the function is undefined at those x values. Who is correct? Justify your reasoning.
anonymous
 one year ago
Looking at the rational function f of x equals the quantity x minus one times the quantity x plus two times the quantity x plus four all divided by the quantity x plus one times the quantity x minus two times the quantity Bella says that the function is defined at x = –1, x = 2, and x = 4. Edward says that the function is undefined at those x values. Who is correct? Justify your reasoning.

This Question is Closed

phi
 one year ago
Best ResponseYou've already chosen the best response.3writing equations out in English makes it very hard to read.

phi
 one year ago
Best ResponseYou've already chosen the best response.3can you use the equation editor?

phi
 one year ago
Best ResponseYou've already chosen the best response.3click on the equation button in the lower left of the input area

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[f(x)=(x1)(x+2)(x+4)/ (x+1)(x2)(x4)\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I couldn't find the "divide" button hahah

phi
 one year ago
Best ResponseYou've already chosen the best response.3the fraction button is there, last row, on the right

phi
 one year ago
Best ResponseYou've already chosen the best response.3anyway, you hopefully know we do not allow "divide by 0" It is not done. in your problem, if you make x certain values, the "bottom" will have a zero and zero times anything is zero and you will have stuff/0 and we don't allow that.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Who would be right??

phi
 one year ago
Best ResponseYou've already chosen the best response.3Do you understand that if you have (for example) (x+1) in the bottom what number (for x) makes x+1 be 0 ?

phi
 one year ago
Best ResponseYou've already chosen the best response.3and if x=1 we will get in the bottom 0 * (12)*(14) or 0 * 3 * 5 notice the 3 and 5 don't matter, because when we multiply it out we get 0 *0 in the bottom* is not allowed

phi
 one year ago
Best ResponseYou've already chosen the best response.3to prevent the divide by 0, we do not allow x=1 then what is the answer for that expression when x=1? answer: we don't have an answer. It is undefined. notice there are two other values that make the bottom 0 we don't allow those either. can you take a guess as to who is right for this question?
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.