191k views
5 votes
( 5 - 2i)2 Write answer in standard form a +bi. Remember you can not have i2 in your answer it is a number.

2 Answers

2 votes

5445,568

Explanation:

User Treysp
by
7.1k points
6 votes

(5 - 2i)^2

Simplify.

25 - 20i + 4i^2

Remember that i^2 = -1.

25 - 20i - 4

Combine like terms

21 - 20i

User Bluelights
by
6.5k points
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