Unit Test — Unit test Answers
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Which statement describes the graph of this polynomial function?
A
The graph crosses the x-axis at x = 0 and touches the x-axis at x = 3.B
The graph touches the x-axis at x = 0 and crosses the x-axis at x = 3.C
The graph crosses the x-axis at x = 0 and touches the x-axis at x = –3.D
The graph touches the x-axis at x = 0 and crosses the x-axis at x = –3.22
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What are the solutions to x3 + 6x = 4x2 + 4?
A
–2, 1 + i, 1 – iB
2, 1 + i, 1 – iC
4, 2 + i, 2 – iD
–4, 2 + i, 2 – i23
What are the roots of the polynomial equation ? Use a graphing calculator and a system of equations.
A
–6, 6B
–4, 1, 3C
–3, –1, 4D
1, 324
Three roots of a fifth degree polynomial function f(x) are –2, 2, and 4 + i. Which statement describes the number and nature of all roots for this function?
A
f(x) has two real roots and one imaginary root.B
f(x) has three real roots.C
f(x) has five real roots.D
f(x) has three real roots and two imaginary roots.
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