A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 4 years ago
form a third degree polynomial function with real coefficients such that 8+i and 7 are zeros
f(x) = ???
anonymous
 4 years ago
form a third degree polynomial function with real coefficients such that 8+i and 7 are zeros f(x) = ???

This Question is Closed

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Since coefficients are real, the two complex roots have to be conjugates. So the simplest polynomial is \[(x7)(x 8 i)(x8+i)\]

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0The question wants the answer in a X^3 +bx^2+cX+# ?? so im confused.....

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0x = 8 + i x8 = +i (x8)^2 = 1 (x8)^2 +1 = 0 x^216x +65 = 0 > (x7)(x^216x+65) Now distribute

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0@dumbcow, why i if the given is positive(+)?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0because complex zeros always come in pairs

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0ahh, yeah. . (+) and ()

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0x^323x^257x455? is that right?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0everything except the "57x" term

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0thanks for the direction much appreciated
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.