Concept explainers
Find the zeros of the given function.
Answer to Problem 5.20EP
The function has zeros at
Explanation of Solution
Given:
The given function is
Calculation:
Since
Find the type of zeros.
Examine the number of sign changes for
Because there are one sign changes for the coefficients of
Because there is one sign changes for the coefficients of
Thus,
Determine the real zeros. List some possible values, and then use synthetic substitution to evaluate
From the table, zero occurs at
Use synthetic substitution with depressed polynomial
Substitute
Use factorization method.
Hence the function haszeros at
Chapter SH Solutions
Glencoe Algebra 2 Student Edition C2014
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