I can't remember how to work this. 7/9-i? It's seven over nine subtract i. I'd appreciate some help.

1 Answer
godki
Mar 7, 2018

Multiply by the conjugate.

Explanation:

You need to multiply by the conjugate to arrive at a simplified answer. The conjugate is simply the bottom term, 9-i, with the opposite sign. (9+i). Multiply both top and bottom by 9+i and simplify.

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