## anonymous 4 years ago Solve.

1. anonymous

$\frac{3+7i}{(2-5i(1+3i)}$

2. anonymous

*)

3. anonymous

After 5i there is supposed to be a )

4. phi

I see this is the same kind of problem that you have been doing for a week. Perhaps you can learn something from these videos (all very short) http://www.khanacademy.org/video/complex-numbers?topic=developmental-math-3 http://www.khanacademy.org/video/multiplying-complex-numbers?topic=developmental-math-3 http://www.khanacademy.org/video/dividing-complex-numbers?topic=developmental-math-3