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OpenStudy (anonymous):
(7-8i)^2 multiply, answer in a+bi form
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OpenStudy (lalaly):
(7-8i)(7-8i)= 49-56i-56i-64= -15 -112i
jimthompson5910 (jim_thompson5910):
Answer is \[\large (7-8i)^2=-15-112i\] See attached for how I got that answer.
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