Quiz about Operations and Powers with Complex Numbers

Question 1

Simplify:
(7 + 2i)(9 - 6i)

Accepted Answer

75-24i

Answer

63 - 24i - 12i²

Answer

51 - 24i

Answer

58 + 60i

Question 2

Simplify:
(10+ 15i)-(48 - 30i)

Accepted Answer

-38 + 45i

Answer

58 - 45i

Answer

58 - 15i

Answer

-38 - 15i

Question 3

Find the sum.
(5-2i) + (-7+8i)

Accepted Answer

-2+6i

Answer

12+6i

Answer

-35-16i2

Answer

-35 -16i

Question 4

Accepted Answer

21 - 16i

Answer

21 -24i

Answer

11 - 16i

Answer

11 - 24i

Question 5

Accepted Answer

34 + 12i

Answer

2 + 12i

Answer

-34 + 12i

Answer

-2 + 12i

Question 6

Accepted Answer

3 + 14i

Answer

8 + 14i

Answer

13 + 14i

Answer

11 + 14i

Question 7

Accepted Answer

-9 + 6i

Answer

15i

Answer

9 + 6i

Answer

-3i

Question 8

(3+4i)(-8-i)

Accepted Answer

-20-35i

Answer

-5+3i

Answer

-24-4i

Answer

-24-4i2

Answer

-20

Question 9

Question 9.

Accepted Answer

A

Answer

B

Answer

C

Answer

D

Question 10

What is the simplified form of (-9 + 5i) + (3 -2i)

Accepted Answer

-6 + 3i

Answer

-12 + 31i

Answer

-11 + 7i

Answer

5 - 3i

Question 11

What is the simplified form of (-3 + 2i)(1- 4i)

Accepted Answer

5 + 14i

Answer

-2 - 2i

Answer

-11 -10i

Answer

-3 -8i

Question 12

Multiply
3i(-2 + 4i)

Accepted Answer

-12-6i

Answer

-6+12i

Answer

-2+7i

Answer

12+6i

Question 13

(i)(3i)

Accepted Answer

-3

Answer

-3i

Answer

3

Answer

2i

Operations and Powers with Complex Numbers

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