Concept explainers
a.
To use the zero or root feature of a graphing utility to approximate (accurate to the nearest thousands) the zeros of the function.
a.

Answer to Problem 103E
Explanation of Solution
Given: Given function is
Concept Used:
Zeros are the values for x for which function gives zero value.
Calculation: To graph the function calculates the following points of the graph.
x | h(x) |
-1.414 | 0 |
-1 | 20 |
0 | 0 |
0.6 | -8.2 |
1.414 | 0 |
2.3 | 9 |
3 | 0 |
3.6 | -9 |
4 | 0 |
Graph the function on the above points
Where x- axis represents x and y -axis represents h(x).
b.
To find one of the exact zeros and use synthetic division to verify result.
b.

Answer to Problem 103E
x =0, 3,4 are three exact zeros of the given polynomial function.
Explanation of Solution
Given: Given function is
Concept Used:
Synthetic division is used here.
Calculation:
Factor out an x , which means x=0 is a zero.
x =3, 4 look like two more exact zero. Confirm with synthetic division.
Using the bottom row as coefficient of the resulting polynomial from dividing h by (x -3 )(x -4).
c.
To factor the polynomial completely..
c.

Answer to Problem 103E
The complete factorization is,
Explanation of Solution
Given: Given function is
Concept Used:
x =0, 3, 4 are three exact zeros of the given polynomial function so,
Calculation:
The complete factorization is,
Chapter 2 Solutions
EP PRECALC.GRAPHING APPR.-WEBASSIGN-1YR
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