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

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

Revolt · Accepted Answer

36

Question 4

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

Revolt · Accepted Answer

10 + 8i

Question 5

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

Revolt · Accepted Answer

14 + 22i

Question 6

Multiply and simplify the product.(8 – 5i)2 Select the product.

Revolt · Accepted Answer

39-80i

Question 7

Multiply each pair of factors. Type the product in the space provided. (6 + 3i)(6 − 3i) = (4 − 5i)(4 + 5i) = (−3 + 8i)(−3 − 8i) =

Revolt · Accepted Answer

45; 41; 73

Question 8

Question 13

Revolt · Accepted Answer

41

Question 9

Question 14

Revolt · Accepted Answer

73

Question 10

Simplify each expression. Select the correct answer from the drop-down menu.

Revolt · Accepted Answer

−6(3i)(−2i) = 2(3 − i)(−2 + 4i) =: –36; −6(3i)(−2i) = 2(3 − i)(−2 + 4i) =: –4 + 28i

Operations with Complex Numbers Answers