Concept explainers
The zeros of
Answer to Problem 4CT
Solution:
The complex zeros of
Explanation of Solution
Given information:
The polynomial function,
Let the equation
Subtract
Add
Therefore,
The degree of
By using the Descartes Rule of signs to find the real zeros,
The number of positive real zeros of
The number of negative real zeros of
By using the Rational zeros Theorem to find the potential rational zeros of
The factor of
The factor of
The potential rational zeros are
Since,
Then, the depressed equation is,
By quadratic formula;
Therefore,
Therefore, the three zeros of
Chapter 4 Solutions
Precalculus Enhanced with Graphing Utilities
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