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Complex Numbers Radical Signs

Authored by Anthony Clark

Mathematics

11th Grade

CCSS covered

Complex Numbers Radical Signs
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19 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What are the zeros of the function f(x) = x2 + 64?

-8 and 8

-8i and 8i

(-√8) i and (√8) i

-√8  and √8

Tags

CCSS.HSN.CN.C.9

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Simplify 
√-25

-5i

5

5i

-5

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Simplify:
√-108

3i√6

3i√20

6i√3

20i√3

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The product of the following complex number in polar form √5(cos130o + i sin130o) ⋅ √45(cos15o + i sin15o) is...

50(cos145o + i sin145o)

15(cos145o + i sin145o)

81(cos100o + i sin100o)

All Options are Correct

Tags

CCSS.HSN.CN.B.4

5.

MULTIPLE CHOICE QUESTION

1 min • 5 pts

7

-7

7i

-7i

6.

MULTIPLE CHOICE QUESTION

1 min • 5 pts

15i

-15i

No Solution

15

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

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Simplify.

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