/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Q. 25 use the given zero to find the r... [FREE SOLUTION] | 91影视

91影视

Find study content
Learning Materials

Discover learning materials by subject, university or textbook.

Explanations

Textbooks
All Subjects

Anthropology

Archaeology

Architecture

Art and Design

Bengali

Biology

Business Studies

Greek

Chemistry

Chinese

Combined Science

Computer Science

Economics

Engineering

English

English Literature

Environmental Science

French

Geography

German

History

Hospitality and Tourism

Human Geography

Italian

Japanese

Law

Macroeconomics

Marketing

Math

Media Studies

Medicine

Microeconomics

Music

Nursing

Nutrition and Food Science

Physics

Polish

Politics

Psychology

Religious Studies

Sociology

Spanish

Sports Sciences

Translation

All Subjects

Biology

Business Studies

Chemistry

Combined Science

Computer Science

Economics

English

Environmental Science

Geography

History

Math

Physics

Psychology

Sociology
Features
Features

Discover all of these amazing features with a free account.

Flashcards

91影视 AI

Notes

Study Plans

Study Sets
What鈥檚 new?

Flashcards
Study your flashcards with three learning modes.

Study Sets
All of your learning materials stored in one place.

Notes
Create and edit notes or documents.

Study Plans
Organise your studies and prepare for exams.
91影视
Discover

All the hacks around your studies and career - in one place.

Find a degree

Magazine
Featured

Magazine
Trusted advice for anyone who wants to ace their studies & career.

The largest student job board with the most exciting opportunities.

Verified student deals from top brands.

Discover our mobile app to take your studies anywhere.

Learning Materials

Features

Discover

Precalculus Enhanced with Graphing Utilities

Sullivan

$Math Studyset 91影视 Explanations$ Math

6th Edition 路 1200 pages

ISBN: 9780321795465

Chapter 4: Q. 25 (page 215)

use the given zero to find the remaining zeros of each function.
$f (x) = 2 x^{4} + 5 x^{3} + 5 x^{2} + 20 x - 12; z e r o : - 2 i$

Short Answer

Expert verified

The roots of the polynomial is $2 i, - 2 i, - 3, \frac{1}{2}$

Step by step solution

01

Given information

We are given a polynomial $f (x) = 2 x^{4} + 5 x^{3} + 5 x^{2} + 20 x - 12$

02

Find the zeros by synthetic divsion

We have,

$f (x) = 2 x^{4} + 5 x^{3} + 5 x^{2} + 20 x - 12$ and 2i as one of the root

$2 i 2 5 5 20 - 12 4 i 10 i - 8 - 20 - 6 i 12 2 5 + 4 i 10 i - 3 - 6 i 0$

as 2i is one root then -2i is the second root

$- 2 i 2 5 + 4 i 10 i - 3 - 6 i - 4 i - 10 i 6 i 2 5 - 3 0$

Now we have,

$f (x) = (x - 2 i) (x + 2 i) (2 x^{2} + 5 x - 3)$

Now we factor the remaining term

$2 x^{2} + 5 x - 3 = 0 (2 x - 1) (x + 3) = 0 鈭� x = \frac{1}{2} o r x = - 3$

03

Conclusion

The roots of the polynomial is $2 i, - 2 i, - 3, \frac{1}{2}$

Unlock Step-by-Step Solutions & Ace Your Exams!

Full Textbook Solutions
Get detailed explanations and key concepts
Unlimited Al creation
Al flashcards, explanations, exams and more...
Ads-free access
To over 500 millions flashcards
Money-back guarantee
We refund you if you fail your exam.

Over 30 million students worldwide already upgrade their learning with 91影视!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

In Problems 39鈥�56, find the real zeros of f. Use the real zeros to factor f.

$f (x) = 2 x^{4} - 3 x^{3} - 21 x^{2} - 2 x + 24$

In Problems 49鈥� 60, for each polynomial function:

(a) List each real zero and its multiplicity.

(b) Determine whether the graph crosses or touches the x-axis at each x-intercept.

(c) Determine the maximum number of turning points on the graph. (d) Determine the end behavior; that is, find the power function that the graph of f resembles for large values of $| x |$

$f (x) = 3 (x - 7) {(x + 3)}^{2}$

Solve the inequality algebraically.

$x^{3} + 2 x^{2} - 3 x > 0$

Solve the inequality algebraically

$(x - 1) (x - 2) (x - 3) 鈮� 0$

$x^{3} + 2 x^{2} - 3 x > 0$

See all solutions

Recommended explanations on Math Textbooks

Theoretical and Mathematical Physics

Read Explanation

Probability and Statistics

Read Explanation

Calculus

Read Explanation

Statistics

Read Explanation

Mechanics Maths

Read Explanation

Pure Maths

Read Explanation

View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.