Quiz about untitled

Question 1

Find the sum.
(5-2i) + (-7+8i)

Accepted Answer

-2+6i

Answer

12+6i

Answer

-35-16i2

Answer

-35 -16i

Question 2

(7 - 5i)(7 + 5i)

Accepted Answer

74

Answer

24

Answer

49 - 25i

Answer

49 + 25i

Question 3

What is the simplified form of (-9 + 5i) + (3 -2i)

Accepted Answer

-6 + 3i

Answer

-12 + 31i

Answer

-11 + 7i

Answer

5 - 3i

Question 4

(10-6i) - (2+3i)

Accepted Answer

8 - 9i

Answer

12 + 3i

Answer

8 - 3i

Answer

-9i + 8

Question 5

Simplify
3i - (4 + 7i)

Accepted Answer

-4 - 4i

Answer

-4 + 10i

Answer

21 - 12i

Answer

4 - 10i

Question 6

Multiply
3i(-2 + 4i)

Accepted Answer

-12-6i

Answer

-6+12i

Answer

-2+7i

Answer

12+6i

Question 7

What is the conjugate of
7-2i?

Accepted Answer

7+2i

Answer

7-2i

Answer

2-7i

Answer

2+7i

Question 8

Question 8.

Accepted Answer

C

Answer

A

Answer

B

Answer

D

Question 9

Simplify the expression:
$$\left(5\ +\ 14i\right)\ -\ \left(10\ +\ 2i\right)$$

Accepted Answer

$$-5\ +\ 12i$$

Answer

$$5\ -16i$$

Answer

$$-5\ +\ 16i$$

Answer

$$5\ -\ 12i$$

Question 10

Simplify the expression:
$$\left(5\ +\ 4i\right)\ -\ \left(-1\ -\ 2i\right)$$

Accepted Answer

$$6\ +6i$$

Answer

$$4\ +\ 2i$$

Answer

$$6\ -\ 6i$$

Answer

$$4\ -\ 2i$$

Question 11

$$Simplify:\ 2\left(2+3i\right)+3\left(2-3i\right)$$

Accepted Answer

$$10-3i$$

Answer

$$4+6i$$

Answer

$$10$$

Answer

$$4+9i$$

Question 12

The complex conjugate of 4 + 3i is

Accepted Answer

4 - 3i

Answer

3 + 4i

Answer

3 - 4i

Answer

4 + 3i

Question 13

Simplify

Accepted Answer

$$\frac{1+50i}{61}$$

Answer

$$\frac{-10+6i}{17}$$

Answer

$$\frac{-23+36i}{25}$$

Answer

$$\frac{-21+33i}{34}$$

Question 14

The expression (2 + 3i)² is equal to

Accepted Answer

-5 + 12i

Answer

-5

Answer

13

Answer

13 + 12i

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