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Quiz 4-2: Complex Numbers, Equations with Complex Solutions

Authored by Joseph Walter

Mathematics

9th - 12th Grade

CCSS covered

Used 14+ times

Quiz 4-2: Complex Numbers, Equations with Complex Solutions
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15 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Michael and Abigail are exploring the world of imaginary numbers! Can you help them simplify this expression?
1. √-64 = ____________

8i

-8

64i

-8i

Tags

CCSS.HSN.CN.A.1

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Emma and William are on a math adventure! They stumble upon a mysterious expression. Can you help them simplify it?
2√-108 = ____________

12i√3

6i√6

24i

18i√2

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Evelyn and Grace are working together on a math puzzle. They come across this challenge:
Help them simplify the expression.
3. (-5i)(-3i) = ____________

-15

15i

-9i

15

Tags

CCSS.HSN.CN.A.2

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

-14i

14i

-2i

-7i

Tags

CCSS.HSN.CN.C.8

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Olivia and Mason are working together to simplify complex numbers. Can you help them out?
5. (8 + 3i) + (-6 - 12i) = ____________

2 - 9i

14 + 15i

-14 - 9i

2 + 9i

Tags

CCSS.HSN.CN.A.2

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Sophia and Samuel are working together to simplify complex numbers. Can you help them solve this one?
6. (5 - 9i) - (1 + 4i) = ____________

4 - 13i

6 - 5i

4 + 13i

-4 - 5i

Tags

CCSS.HSN.CN.A.2

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Mason and Luna are working together to simplify complex numbers. Can you help them out?
What is (9 + 5i)(4 - 2i)?

46 + 14i

38 + 28i

36 - 10i

48 + 8i

Tags

CCSS.HSN.CN.C.8

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