Quiz about Multiply Conjugates

Question 1

Multiply: (4 - i)(4 + i)

Accepted Answer

17

Answer

Answer

$$16-8i-i^2$$

Answer

Question 2

Multiply (5 + 2i)(5 - 2i)

Accepted Answer

29

Answer

$$25-i^2$$

Answer

21

Answer

29-10i

Question 3

What type of number is the result of multiplying a complex number and its conjugate?

Accepted Answer

Real Number

Answer

Natural Number

Answer

Imaginary Number

Answer

Irrational Number

Question 4

What is the conjugate you would multiply by?

Accepted Answer

-5-2i

Answer

5+2i

Answer

5-2i

Answer

-5+2i

Question 5

What is the denominator after multiplying and before simplifying?

Accepted Answer

17

Answer

13

Answer

5i

Answer

15i

Question 6

What is the denominator after multiplying and before simplifying?

Accepted Answer

29

Answer

-3

Answer

21i

Answer

2+5i

Question 7

What is the denominator after multiplying and before simplifying?

Accepted Answer

10

Answer

-10

Answer

-2i

Answer

2i

Question 8

What is the numerator after multiplying and before simplifying?

Accepted Answer

-5+2i

Answer

1

Answer

-7i

Answer

-4+i

Question 9

What is the conjugate you would multiply by?

Accepted Answer

2+i

Answer

2-i

Answer

-2+i

Answer

-2-i

Question 10

What is the numerator after multiplying and before simplifying?

Accepted Answer

8+6i

Answer

6-8i

Answer

12-6i

Answer

-3+4i

Question 11

When multiplying two complex conjugates, the solution will always be

Example: $$\left(2+2i\right)\cdot\left(2-2i\right)=$$

Accepted Answer

Real

Answer

Imaginary

Answer

Complex

Question 12

Multiply: (4-i)(4+i)

Accepted Answer

17

Answer

Answer

$$16-8i-i^2$$

Answer

Question 13

Multiply (5+2i)(5-2i)

Accepted Answer

29

Answer

$$25-i^2$$

Answer

21

Answer

29-10i

Question 14

Multiply (6-2i)(6+2i)

Accepted Answer

40

Answer

32

Answer

Answer

Question 15

Multiply the complex number by its conjugate:

$$\left(6+7i\right)$$

Accepted Answer

$$85$$

Answer

$$-13+84i$$

Answer

$$-13$$

Answer

$$36+49i^2$$

Question 16

Multiply the complex number by its conjugate:

Accepted Answer

$$97$$

Answer

$$81+72i+16i^2$$

Answer

$$26$$

Answer

$$65$$

Question 17

Multiply and Simplify: (i - 6)(i + 6)

Accepted Answer

-37

Answer

-35

Answer

i2 - 36

Answer

i2 + 36

Question 18

Multiply and Simplify: (2i - 3)(2i + 3)

Accepted Answer

-13

Answer

-5

Answer

4i2 - 9

Answer

4i2 + 9

Question 19

Multiply and Simplify: (5 - i)(5 + i)

Accepted Answer

26

Answer

24

Answer

25 - i2

Answer

25 + i2

Multiply Conjugates

Create a free account and access millions of resources

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Mathematics