Jse synthetic division to show that x is a solution of the third-degree polynomial equation, and use the result to factor the polynomial completely. List all real solutions of che equation. (Enter your answers as a comma-separated list.) x3 - 21x + 20 = 0, x = 4 dditionsal Materials

College Algebra
10th Edition
ISBN:9781337282291
Author:Ron Larson
Publisher:Ron Larson
Chapter3: Polynomial Functions
Section: Chapter Questions
Problem 8T: Use synthetic division to show that x=3 is a zero of the function f(x)=2x35x26x+15. Use the result...
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Use synthetic division to show that x is a solution of the third-degree polynomial equation, and use the result to factor the polynomial completely. List all real solutions of
the equation. (Enter your answers as a comma-separated list.)
x³ – 21x + 20 = 0,
X = 4
Additional Materials
Transcribed Image Text:Use synthetic division to show that x is a solution of the third-degree polynomial equation, and use the result to factor the polynomial completely. List all real solutions of the equation. (Enter your answers as a comma-separated list.) x³ – 21x + 20 = 0, X = 4 Additional Materials
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