Bluebook SAT Test Complex Numbers 2

Question 1

What is (3 + 2i) − (1 − 4i)?

Accepted Answer

2 + 6i

Answer

2 − 2i

Answer

4 − 2i

Answer

4 + 6i

Question 2

Which of the following equals i^17?

Accepted Answer

i

Answer

1

Answer

−1

Answer

−i

Question 3

What is (1 + i) ÷ (1 − i)?

Accepted Answer

i

Answer

1

Answer

−1

Answer

−i

Question 4

If z = 3 − 4i, what is the product z × z̄ (where z̄ is the complex conjugate of z)?

Accepted Answer

25

Answer

9 + 16i

Answer

−7

Answer

25i

Question 5

What is the real part of the product (5 + 3i)(2 − i)?

Accepted Answer

13

Answer

10

Answer

7

Answer

3

Question 6

What is the value of (2i)³?

Accepted Answer

−8i

Answer

8i

Answer

8

Answer

−8

Question 7

What is (6 + 4i) ÷ 2?

Accepted Answer

3 + 2i

Answer

3 − 2i

Answer

6 + 2i

Answer

12 + 8i