Complex Numbers Answers

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If f(x) = x3 – 2x2, which expression is equivalent to f(i)?

–2 + i

–2 – i

2 + i

2 – i

What is the square root of –16?

–8i

–4i

Which expression is equivalent to ?

Negative 4 StartRoot 5 EndRoot

Negative 4 StartRoot 5 EndRoot i

4 StartRoot 5 EndRoot i

4 StartRoot 5 EndRoot

Which complex number has a distance of from the origin on the complex plane?

2 + 15i

17 + i

20 – 3i

4 – i

Which expression is equivalent to i 233?

–1

–i

Which of the following is an example of a complex number that is not in the set of real numbers?

-7

2 + StartRoot 3 EndRoot

4 + 9i

Which of the following is equivalent to ?

18 – 5i

18 + 5i

What is the square root of -1?

–i

–1

If f(x) = 1 – x, which value is equivalent to |f(i)|?

StartRoot 2 EndRoot

StartRoot negative 1 EndRoot

If , what is the value of i 3?

–1

–i

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