Quiz about 1111111111111111

Question 1

Question 1.

Accepted Answer

10i

Answer

10

Answer

-10

Answer

-10i

Question 2

Simplify the expression:
$$\left(8\ +\ 9i\right)\ +\ \left(4\ -\ 6i\right)$$

Accepted Answer

$$12\ +\ 3i$$

Answer

$$17\ +\ 3i$$

Answer

$$12\ +\ 3i^2$$

Answer

$$17\ -2i$$

Question 3

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 4

$$Simplify:\ \ \ \ 2i\left(4\ +\ 3i\right)$$

Accepted Answer

$$-6\ +\ 8i$$

Answer

$$6\ +\ 8i$$

Answer

$$-6i\ +\ 8i$$

Answer

$$-1\ +\ 8i$$

Question 5

$$Simplify:\ \ \left(-2\ +\ 7i\right)\left(4\ -\ 2i\right)$$

Accepted Answer

$$6+\ 32i$$

Answer

$$-6\ +\ 32i$$

Answer

$$22+32i$$

Answer

$$6\ +\ 24i$$

Question 6

$$Simplify:\ \ 3i\left(3i-4\right)$$

Accepted Answer

$$-9\ -12i$$

Answer

$$9i-12i$$

Answer

$$9-12i$$

Answer

$$-9+12i$$

Question 7

Simplify $$\frac{12}{8i}$$

Accepted Answer

$$-\frac{3i}{2}$$

Answer

$$-\frac{13i}{8}$$

Answer

$$-\frac{7i}{4}$$

Answer

$$\frac{3i}{7}$$

Question 8

(2i)(3i)

Accepted Answer

-6

Answer

5i

Answer

-5

Answer

6i

Question 9

(5-i)(5-i)

Accepted Answer

24-10i

Answer

15-8i

Answer

36

Answer

24+10i

Question 10

What is the conjugate of -5 + 4i

Accepted Answer

-5 - 4i

Answer

5 + 4i

Answer

5 - 4i

Answer

-5 + 4i

Question 11

What is the conjugate of 4i?

Accepted Answer

-4i

Answer

4i

Answer

4 + 4i

Answer

4-4i

Question 12

$$\frac{5-8i}{3+2i}$$ , what do you do to divide?

Accepted Answer

Multiply the top and bottom by 3-2i

Answer

Multiply the top and bottom by 5 + 8i

Answer

multiply the top by 5 + 8i and the bottom by 3 - 2i

Answer

Multiply the top and bottom by -3 - 2i

Question 13

Solve.
x² = -100

Accepted Answer

$$x=\pm10i$$

Answer

Answer

Answer

$$x=\sqrt[]{10}$$

Question 14

Question 14.

Accepted Answer

Option A is correct

Answer

B.

Answer

C.

Answer

D.

Question 15

(3+8i)(-2-i)

Accepted Answer

2-19i

Answer

23-i

Answer

34+5i

Answer

23-i

Answer

-6 - 8i

Question 16

(1-3i)(2+5i)

Accepted Answer

17-i

Answer

22-i

Answer

16-i

Answer

-13 - i

Answer

-2 + 7i

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