## anonymous 5 years ago 10i/-5+5i still confused

1. anonymous

multiply top and bottom my conjugate

2. anonymous

me either, what happen with 10i/-5+5i ?

3. amistre64

$\frac{10i}{-5} +5i??$

4. anonymous

no the +5i is under the division sign too

5. anonymous

10i / (-5 + 5i) = 1 - i

6. anonymous

that is given i as an imaginary unit - what is the actual question? See if this helps given i as a variable = http://www.wolframalpha.com/input/?i=10i%2F%28-5%2B5i%29&a=i_Variable