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

Question

Mathematics

Henry Joseph

9 June, 02:24

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

+2

Answers (2)

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Jazlynn Sheppard · Answer 1

(6 + 3i) (6 + 3i) = 6*6 + 6*3i + 6*3i + 9i^2

= 36 + 36i + 9*-1

= 36 + 36i - 9

= 27 + 36i

Doobie · Answer 2

(6 + 3i) (6 - 3i) = 6² - (3i) ² = 36 - 9i² = 36 + 9 = 45

(4 - 5i) (4 + 5i) = 4² - (5i) ² = 16 - 25i² = 16 + 25 = 41

(-3 + 8i) (-3 - 8i) = (-3) ² - (8i) ² = 9 - 64i² = 9 + 64 = 73