Operations with Complex Numbers

Question 1

Which subtraction expression has the difference 1 + 4i?

Revolt · Accepted Answer

(3 + 5i) – (2 + i)

Question 2

Subtract (3 + 2i) from (–9 – 8i).

Revolt · Accepted Answer

–12 – 10i

Question 3

–3636–6 – 6i 36i

Revolt · Accepted Answer

–36; Selection 1: –36; Selection 2: –4 + 28i

Question 4

Multiply and simplify the product.–12i × 3iSelect the product.

Revolt · Accepted Answer

36

Question 5

Multiply and simplify the product.(3 – 5i)(–2 + 4i) Select the product.

Revolt · Accepted Answer

14 + 22i

Question 6

(6 + 3i)(6 − 3i) = [___] (4 − 5i)(4 + 5i) = [___] (−3 + 8i)(−3 − 8i) = [___]

Revolt · Accepted Answer

Part 1: 45; Part 2: 41; Part 3: 73; 45

Question 7

Which pair of complex factors results in a real-number product?

Revolt · Accepted Answer

(4+7i)(4-7i)

Question 8

Select the correct answer from the choices given(13 + 4i) + n = 0 What is n?

Revolt · Accepted Answer

–13 - 4i

Question 9

Which addition expression has the sum 8 – 3i ?

Revolt · Accepted Answer

(9 + 4i) + (–1 – 7i)

Question 10

Multiply and simplify the product.2i(4 – 5i) Select the product.

Revolt · Accepted Answer

10 + 8i

Operations with Complex Numbers Answers