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

User Gosseti
by
4.8k points

2 Answers

3 votes

Answer:

A. -16+37i

Explanation:

did it on edge

User Jveldridge
by
5.0k points
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

User Jan Schaefer
by
5.7k points
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