Math, asked by khanshazil584, 7 months ago

(x+yi)\i=(7+9i) Find (x+yi)(x-yi)

Answers

Answered by Abhipamuu

7

Answer:

-32

Step-by-step explanation:

x=7, y=9

(x+y) (x-y) =x²-y²

(7+9) (7-9) =7²-9²

=49-81

=-32

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