3426141282 3426141282

19-02-2019
Mathematics

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Find the product of -2+2i and its conjugate

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jimrgrant1 jimrgrant1

19-02-2019

Answer:

8

Step-by-step explanation:

The conjugate of - 2 + 2i is - 2 - 2i, hence

(- 2 + 2i)(- 2 - 2i) ← expand factors using FOIL

= 4 + 4i - 4i - 4i² [ note i² = - 1 ]

= 4 + 4

= 8

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