Factoring Polynomials Completely — Unit test Answers

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Which of the following is the complete list of roots for the polynomial function ?

–5, 3

–5, 3, –4 + i, –4 – i

–5, 3, –4 + i, 4 + i

–4 + i, –4 – i

Which expression is equivalent to ? Assume and .

StartFraction a cubed b (RootIndex 3 StartRoot 15 b squared EndRoot) Over 2 c cubed EndFraction

StartFraction b (RootIndex 3 StartRoot 15 b EndRoot) Over 2 a squared c cubed EndFraction

StartFraction a cubed b (RootIndex 3 StartRoot 15 b squared EndRoot) Over 6 c cubed EndFraction

StartFraction b (RootIndex 3 StartRoot 15 b EndRoot) Over 2 a c EndFraction

A student factors 15c2 + c – 28 to the following. (c + 2)(15c – 14) Which statement about (c + 2)(15c – 14) is true?

The expression is equivalent, and it is completely factored.

The expression is equivalent, but it is not completely factored.

The expression is not equivalent, but it is completely factored.

The expression is not equivalent, and it is not completely factored.

Which statement describes the graph of this polynomial function?

The graph crosses the x-axis at x = 2 and x = –1 and touches the x-axis at x = 0.

The graph touches the x-axis at x = 2 and x = –1 and crosses the x-axis at x = 0.

The graph crosses the x-axis at x = –2 and x = 1 and touches the x-axis at x = 0.

The graph touches the x-axis at x = –2 and x = 1 and crosses the x-axis at x = 0.

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