A community for students.
Here's the question you clicked on:
 0 viewing
animalsavior94
 3 years ago
find all the zeros of the function and write the function as a product of its linear factors.
f(x)=3x^4 +2x^3 28x^2 14x+56
animalsavior94
 3 years ago
find all the zeros of the function and write the function as a product of its linear factors. f(x)=3x^4 +2x^3 28x^2 14x+56

This Question is Closed

satellite73
 3 years ago
Best ResponseYou've already chosen the best response.0sure you typed it in right?

animalsavior94
 3 years ago
Best ResponseYou've already chosen the best response.0no lol its f(x)=3x^4 +2x^329x^214x+56

satellite73
 3 years ago
Best ResponseYou've already chosen the best response.0good then cheat http://www.wolframalpha.com/input/?i=+f%28x%29%3D3x^4+%2B2x^329x^214x%2B56

animalsavior94
 3 years ago
Best ResponseYou've already chosen the best response.0your supposed to do something else with it...i forgot whats it called but u gotta pull all the number out then find the zeros

satellite73
 3 years ago
Best ResponseYou've already chosen the best response.0zeros are 2, 4/3, and +/ root 7

satellite73
 3 years ago
Best ResponseYou've already chosen the best response.0factor. it is given to you in factored form. once you know 2 is a zero you factor as (x+2) something. you find the something by division

animalsavior94
 3 years ago
Best ResponseYou've already chosen the best response.0ohh its synthetic divison could do show it by that

satellite73
 3 years ago
Best ResponseYou've already chosen the best response.0i would hate to have to do this by hand.

satellite73
 3 years ago
Best ResponseYou've already chosen the best response.0yes synthetic division list the coefficients. 3 2 28 14 56

satellite73
 3 years ago
Best ResponseYou've already chosen the best response.0put a 2 on the side 3 2 28 14 56 2 ______________________________________

animalsavior94
 3 years ago
Best ResponseYou've already chosen the best response.0no its 3 2 29 14 56

animalsavior94
 3 years ago
Best ResponseYou've already chosen the best response.0where did u get the 2 from the side from?

satellite73
 3 years ago
Best ResponseYou've already chosen the best response.0bring down the three 3 2 29 14 56 2 ______________________________________ 3

animalsavior94
 3 years ago
Best ResponseYou've already chosen the best response.0no wait wheredid u get the 2 from

satellite73
 3 years ago
Best ResponseYou've already chosen the best response.03*2=6 3 2 29 14 56 2 6 ______________________________________ 3

satellite73
 3 years ago
Best ResponseYou've already chosen the best response.0i got the 2 because i know 2 is a zero. you have to know that to begin with!

satellite73
 3 years ago
Best ResponseYou've already chosen the best response.02 + 6 = 4 3 2 29 14 56 2 6 ______________________________________ 3 4

animalsavior94
 3 years ago
Best ResponseYou've already chosen the best response.0wait ok this is what i did i got all the numbers i know what to do i just dont know where u got the 2 from

satellite73
 3 years ago
Best ResponseYou've already chosen the best response.04*2=8 3 2 29 14 56 2 6 8 ______________________________________ 3 4

satellite73
 3 years ago
Best ResponseYou've already chosen the best response.0in order to divide i must first know a zero of this function. if i do not i cannot divide. i am dividing by x + 2

satellite73
 3 years ago
Best ResponseYou've already chosen the best response.029 + 8 = 21 3 2 29 14 56 2 6 8 ______________________________________ 3 4 21

satellite73
 3 years ago
Best ResponseYou've already chosen the best response.0ok we know that f(2)=0 so we know f factors as (x+2) q(x) we are trying to find q(x)

satellite73
 3 years ago
Best ResponseYou've already chosen the best response.0we find q(x) by dividing f(x) by x + 2 which is what this synthetic division is doing

satellite73
 3 years ago
Best ResponseYou've already chosen the best response.0if we do not know a zero we do not know what to divide by

satellite73
 3 years ago
Best ResponseYou've already chosen the best response.0i know it is a zero because i cheated and used wolfram alpha. if i had to do it by hand i don't know what i would do. maybe graph it on a calculator and surmise that it crosses the x axis at 2

satellite73
 3 years ago
Best ResponseYou've already chosen the best response.0the factored form of this beast is \[(x+2)(3x4)(x^2  7)\]

satellite73
 3 years ago
Best ResponseYou've already chosen the best response.0i am just factoring out the x + 2 at the moment.

animalsavior94
 3 years ago
Best ResponseYou've already chosen the best response.0so what are the zeros if it ended with 3 4 21 28 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.