Question

5-4i/10-5i

Answer 1

Multiply top and bottom by 10+5i.

Answer 2

hy do I do after that.. that's where i'm getting lost

Answer 3

Just do that first.

Answer 4

I did

Answer 5

Well show your work.

Answer 6

Can't help you further if you can't show how far you understand it. Good luck.

Answer 7

oh sorry, I was helping my friend with something else, one sec let me type it up for you

Answer 8

\[\frac{ 50-15i+20 }{ 100+25 }\]

Answer 9

that's what I got when I multiplied the numerator and denominator by 10+5i

Answer 10

Then simplify that.

Answer 11

\[\frac{ 5(10-3i+4) }{ 25 }\]...I think I did this wrong...

Answer 12

You're fine. You can just add the real numbers normally.

Answer 13

Yes you did it wrong. The denominator.

Answer 14

I don't know what I did wrong on the denominator, One second let me show you my work...

Answer 15

100-50i+50i-25i^2
100-25(-1)
100+25
125