Imaginary #'s

Imaginary #'s

8th - 12th Grade

9 Qs

quiz-placeholder

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Imaginary #'s

Imaginary #'s

Assessment

Quiz

Mathematics

8th - 12th Grade

Easy

Created by

Michael Ladolcetta

Used 6+ times

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9 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 100\sqrt{-100}  

10

-10

10i

-10i

2.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

-6i2 =

6i

6

-6

-6i

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

 450 =4\sqrt{-50\ }=  


 82-8\sqrt{2}  

 202-20\sqrt{2}  

 8i58i\sqrt{5}  

 20i220i\sqrt{2}  

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Simplify Completely: (11 + 4i)(2 - 3i)

13 + i

34 - 25i

34 + 25i

-12i2 - 25i + 22

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Simplify completely:  65i\frac{6}{5i}  

 6i5\frac{-6i}{5}  

 6i5\frac{6i}{5}  

6

 30i25\frac{-30i}{25}  

6.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

What would need to be added to 5 + 4i to get 0?

-5 + 4i

5 + 4i

9i

-5 - 4i

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

6 + 7i - (2 + i) =

4 + 6i

4 + 8i

12 + 7i2

-3

8.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

 (3+6)(2+6)\left(3+\sqrt{-6}\right)\left(2+\sqrt{-6}\right)  =  ??

 565-\sqrt{6}  

 6+5i666+5i\sqrt{6}-\sqrt{6}  

 12+5i612+5i\sqrt{6}  

 5i65i\sqrt{6}  

9.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Solve:   x2+49=0x^2+49=0  

 x=7ix=7i  

 x=±7ix=\pm7i  

 x=±7x=\pm7  

 x=±49ix=\pm49i