Solve for E; if I = (4-5i) and R = (3+7i)

I am currently a 42 year old college student looking for help as I am re-renting the great world of enducation. Any hints to solving these problems would be greatly appreciated. It's been a long time since I have had to use, or participated in any type of Algebra classes. Thanks!!! :)
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1 Answer

The question doesn't show the relationship between E, I and R so let's assume E=IR, then:

E=(4-5i)(3+7i)=12+13i-35i2. Taking i=√-1, then i2=-1 and E=12+13i+35=47+13i.

by Top Rated User (1.2m points)

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