Complex numbers

University

•

18 Qs

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Complex numbers

Complex numbers

Assessment

Quiz

•

Mathematics

•

University

•

Medium

Created by

Ali Balushi

Used 1+ times

FREE Resource

18 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

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

58 - 45i

58 - 15i

-38 - 15i

-38 + 45i

2.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

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

75-24i

63 - 24i - 12i²

51 - 24i

58 + 60i

3.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

What does i² = ?

-1

√-1

1

-√1

4.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Simplify
3i - (4 + 7i)

-4 + 10i

21 - 12i

4 - 10i

-4 - 4i

5.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

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

-2+6i

12+6i

-35-16i²

-35 -16i

6.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Multiply
(2i)(3i)

5i

-5

6i

-6

7.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

The expression (2 + 3i)² is equal to

-5

-5 + 12i

13

13 + 12i

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