Which expression is the equivalent to (4+7i)(3+4i)

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asked Nov 8, 2020 115k views

3 votes

Which expression is the equivalent to (4+7i)(3+4i)

Mathematics
middle-school

Gosseti asked

by Gosseti

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2 Answers

3 votes

Answer:

A. -16+37i

Explanation:

did it on edge

Jveldridge answered Nov 9, 2020

by Jveldridge

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5 votes

Answer:

-16 + 37i

Explanation:

First expand.

You get 12 + 16i + 21i + 28i^2.

Because
i=√(-1) , you get 12 + 37i - 28 or -16 + 37i.
$\blacksquare$

Jan Schaefer answered Nov 12, 2020

by Jan Schaefer

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