Operations with Complex Numbers

Question 1

Which addition expression has the sum 8 – 3i ?

Revolt · Accepted Answer

(9 + 4i) + (–1 – 7i)

Question 2

(9 – 6i) × m = 9 – 6i What is m?

Revolt · Accepted Answer

1

Question 3

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

Revolt · Accepted Answer

73

Question 4

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

Question 5

–2 + 14i –4 + 28i –20 + 20i

Revolt · Accepted Answer

–4 + 28i

Operations with Complex Numbers Answers