A community for students.
Here's the question you clicked on:
 0 viewing
burhan101
 2 years ago
x intercept for this function
burhan101
 2 years ago
x intercept for this function

This Question is Closed

burhan101
 2 years ago
Best ResponseYou've already chosen the best response.0\[\huge y=x^39x^2+15x+4\]

burhan101
 2 years ago
Best ResponseYou've already chosen the best response.0this is unfactorable?

SmoothMath
 2 years ago
Best ResponseYou've already chosen the best response.0Any particular method they want you to use? Do they specify factoring?

burhan101
 2 years ago
Best ResponseYou've already chosen the best response.0No but isnt that the only way?

SmoothMath
 2 years ago
Best ResponseYou've already chosen the best response.0Graphing is the easiest.

SmoothMath
 2 years ago
Best ResponseYou've already chosen the best response.0Graph that bad boy. Look for where it crosses the x axis. Doneso.

burhan101
 2 years ago
Best ResponseYou've already chosen the best response.0no i have to use an algebraic method

burhan101
 2 years ago
Best ResponseYou've already chosen the best response.0because like say on an exam, i cant graph that

Mertsj
 2 years ago
Best ResponseYou've already chosen the best response.0Possible rational roots are :

SmoothMath
 2 years ago
Best ResponseYou've already chosen the best response.0Okay then your best best is to use the rational root theorem to list possible rational roots. Then check each one to see if it is a valid root.

Mertsj
 2 years ago
Best ResponseYou've already chosen the best response.0Use synthetic division to see if any of those are actual roots.

SmoothMath
 2 years ago
Best ResponseYou've already chosen the best response.0Mertsj is correct. The way he got those possible roots is: A: Make a list of factors for the last number (In this case, it's 4) B: Make a list of factors for the first coefficient (In this case, it's 1) Possible rational roots must be of the form \(\huge \frac{\text{things in the first list}}{\text{things in the second list}}\)

Mertsj
 2 years ago
Best ResponseYou've already chosen the best response.0So the best approach would be to find where y changes sign. Then you would know there is a root between those two values and you could hone in on it by trial and error. Of if you know calculus, you could use the derivative. What class is this for?

oldrin.bataku
 2 years ago
Best ResponseYou've already chosen the best response.0they want you to bruteforce using newton's more than likely
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.