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1.Given the polynomial, list each zero and the corresponding multiplicity. f(x)

ID: 3032962 • Letter: 1

Question

1.Given the polynomial, list each zero and the corresponding multiplicity.
f(x) = 2x(x + 4)2

2. Given the polynomial, determine the end behavior by stating the power function that the graph of f(x) resembles.

f(x) = 2x(x + 4)2

3. Given the polynomial, approximate the location of the turning points to two decimal places.
f(x) = 2x(x + 4)2

4. Determine whether (x - c) is a factor of f(x). If so, write it in factored form.
(x - c) = (x + 3)
f(x) = -4x3 + 5x2 + 8

5. Given a polynomial f(x) with real coefficients and the following information, find the remaining zeros of f(x).
Degree 4
Zeros: 2 - i, i

6.

Use the given zero (1 + 3i) to find the remaining zeros (complex or real) of

f(x) = x4 - 7x3 + 14x2 - 38x - 60

7.

Use the given zero (- 5i) to find the remaining zeros (complex or real) of

f(x) = x3 + 3x2 + 25x + 75

8.Find all local minima and local maxima, if any, of f(x) = (3x2 - 18x + 24)/(x + 2).
Round to two decimal places.

9. Find all local maxima or local minima, if they exist, of h(x) = (4x2 - 4)/(x4 - 16).

Explanation / Answer

1.Given the polynomial, list each zero and the corresponding multiplicity.
f(x) = 2x(x + 4)2

zeros : 2x(x +4)^2 = 0

x =0   ( multiplicity 1)

x = -4 . -4 ( multiplicity 2)

2. Given the polynomial, determine the end behavior by stating the power function that the graph of f(x) resembles.

f(x) = 2x(x + 4)2

power function ; f(x) = 2*x*x^2 = 2x^3

odd degree power function

So, for x ----> - inf ; f(x) ----> -inf

for x ---> +inf ; f(x) ----> +inf