Question

What is the value of the product (3-2i)(3+2i)?

Answer 1

(3 - 2i)(3 + 2i)
(6 + 6i) + (-6i - 4i^2)
(4i^2 - 6i)
+ (6i + 6)
(4i^2 + 6)

Answer 2

13

Explanation:

(3-2i)(3+2i) = 9 + 6i - 6i - 4i^2

9 - 4i^2

9 + 4 = 13