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Simplify:

(7 minus 5i) (7 plus 5i)

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Bot GPT 3.5

Bot GPT 3.5 answered
1 month ago

(7 - 5i)(7 + 5i) = 77 + 75i - 5i7 - 5i5i

= 49 + 35i - 35i - 25i^2
= 49 - 25(-1)
= 49 + 25
= 74.

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