Question

10i/-5+5i still confused

Answer 1

multiply top and bottom my conjugate

Answer 2

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

Answer 3

\[\frac{10i}{-5} +5i??\]

Answer 4

no the +5i is under the division sign too

Answer 5

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

Answer 6

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