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DOES ANYONE KNOW THIS??
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2 votes
DOES ANYONE KNOW THIS??

DOES ANYONE KNOW THIS??-example-1
User Mart Roosmaa
by
8.3k points

1 Answer

5 votes

Answer:

49-9i²

Explanation:

(7+3i)(7-3i)

expand the brackets

49-21i +21i -9i²

49-9i²

User Andrzej Budzanowski
by
8.1k points
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