f(x) = x³ + 6x² – 13x – 6
College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter4: Polynomial And Rational Functions
Section4.1: Quadratic Functions
Problem 3SC
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Question
list all possible roots , find all the factors , state the zero
Expert Solution
Step 1
Given that .
To determine all the roots and factors of .
For, consider .
By trail and error method, at ,
Therefore, 2 is a root of .
Which implies that, is a factor of .
Now to find the other factors use long division method.
That is
Therefore,
Step 2
To find other roots, consider
By definition,
Therefore,
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