Question

divide and answer in a+b¡ form. and how to Check the answer by using multiplication??
2/1-√-4

Answer 1

2/(1-2i) = 2(1+2i)/(5)

Answer 2

\[\sqrt{-4} = i \sqrt{4} = 2i\]

\[\frac{2}{1-2i}*\frac{1+2i}{1+2i} = \frac{2(1+2i)}{5}\]

Answer 3

i^2 = -1