If a=5+2i, b=-3+i and c=4i(2+3I), determine ab+c in simplest a+bi form

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Meng Lu asked Jan 13, 2023

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If a=5+2i, b=-3+i and c=4i(2+3I), determine ab+c in simplest a+bi form

Mathematics
high-school

Meng Lu asked Jan 13, 2023

by Meng Lu

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15 votes

Answer:

-29+7i

Explanation:

(5+2i)(-3+i)

-15+5i-6i+2i²

i²=-1

Simplify

-17-i

Add c

c=4i(2+3i)

=8i+12i²

=8i-12

-17-i+8i-12

-29+7i

BoiseBaked answered Jan 17, 2023

by BoiseBaked

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