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Mathematics, 26.09.2020 01:01 xojade

Simplify the expression (9 + 2i)(9 − 2i):
81 − 18i
81 + 18i
77
85

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Simplify the expression (9 + 2i)(9 − 2i):
81 − 18i
81 + 18i
77
85...

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