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Complex Numbers

Authored by Sarah Rihner

Mathematics

9th - 12th Grade

Used 12+ times

Complex Numbers
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8 questions

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1.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

 20i9-20i^9  

-20

-20i

20

i

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Combine: (14i - 15) - (3 - 2i)

11 - 13i

-18 + 16i

-12 + 16i

-18 + 12i

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which complex number represents the conjugate of 8i - 5?

8i + 5

-5 + 8i

-5 - 8i

5 + 8i

4.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

 x2144=0x^2-144=0  

x = 12

x = 12i

x =  ±12\pm12  

x =  ±12i\pm12i  

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

 13i14\frac{1}{3}i^{14}  

 13\frac{1}{3}  

 13-\frac{1}{3}  

-1

 13i-\frac{1}{3}i  

6.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

 59-5\sqrt{-9}  

-15i

-15

3i

15i

7.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

 200-\sqrt{200}  

 5i85i\sqrt{8}  

 58-5\sqrt{8}  

 10i210i\sqrt{2}  

 102-10\sqrt{2}  

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