Multiply (3+6i)(2+8i)

RaphaelH asked Sep 15, 2023

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45 votes

Multiply
(3+6i)(2+8i)

RaphaelH asked Sep 15, 2023

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14 votes

$~~(3+6i)(2+8i)\\\\=3(2) + 3(8i) + 2(6i)+ (6i)(8i)\\\\=6 + 24i +12i+48i^2\\\\=6+36i-48~~~~~~~~~~~~~~~~~~~~~~~;[i^2 = -1]\\\\=-42+36i$

MEM answered Sep 21, 2023

by MEM

3.3k points

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