Complex Numbers Quiz

Quiz

•

Mathematics

•

9th - 12th Grade

•

Hard

•

CCSS

HSA.REI.B.4, HSN.CN.A.1, HSN.CN.A.2

+1

Standards-aligned

Josh Maroney

FREE Resource

14 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

10

-10

10i

-10i

2.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

What is the complex conjugate of 4-3i?

A. 1/(4-3i)

B. 1/(4+3i)

C. -4 + 3i

D. 4 + 3i

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

(5-2i) + (-7+8i)

-2+6i

12+6i

-35-16i²

-35 -16i

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Multiply:
(4 – 3i)(-7 – 2i)

A. -23 + 13i

B. -23 - 29i

C. -34 + 13i

D. -34 - 29i

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

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

58 - 45i

58 - 15i

-38 - 15i

-38 + 45i

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

(1-3i)(2+5i)

22-i

16-i

17-i

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

(2i)(3i)

5i

-5

6i

-6

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