how do i solve: (3+4i)(3-4i)

how do i solve:

(3+4i)(3-4i)

Answered Same DayDec 23, 2021

Answer To: how do i solve: (3+4i)(3-4i)

Robert answered on Dec 23 2021

128 Votes

3 + 4i
3− 4i
=
(3 + 4i)(3 + 4i)
(3− 4i)(3 + 4i)
=
9 + (4i)2 + 12i
32 − (4i)2
=
9− 16 + 12i

9 + 16
=
−7 + 12i
25
=
−7
25
+
12
25
i
1

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