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OpenStudy (anonymous):
Simplify. (5 + i)2 A) 24 B) 24 + 10i C) 25 + 10i D) 26 + 10i
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jimthompson5910 (jim_thompson5910):
(5 + i)^2 (5 + i)(5 + i) 5*5 + 5*i + i*5 + i*i 25 + 5i + 5i + i^2 25 + 5i + 5i + (-1) 24 + 10i So (5 + i)^2 = 24 + 10i
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