Algebra and Trigonometry (MindTap Course List)
4th Edition
ISBN:9781305071742
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter13: Sequences And Series
Section13.CT: Chapter Test
Problem 11CT
Related questions
Question
Expert Solution
Step 1
Function y = x3 - 4x2 + 2x + 7
Put x = - 1
y = (-1)3 - 4(-1)2 + 2(-1) + 7
y = -1 - 4*1 - 2 + 7
y = -1 - 4 - 2 + 7
y = 7 - 7
y = 0
Function y has a zero at x = - 1 and function y has factor of (x+1)
y = (x + 1)(x2 - 5x + 7)
The graph is shown below
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