Question

Simplify the expression. (√-1)/((2-4i)-(5+3i))

Answer 1

Mulitiple choice
a.) (-7-3i)/58
b.) (7+3i)/40
c.) (-7+3i)/58
d.) (7-3i)/40

Answer 2

\[\LARGE { \sqrt{-1}\over (2-4i)-(5+3i)}=\]
\[\LARGE {i\cdot \sqrt{1}\over 2-4i-5-3i}=\]
\[\LARGE {i\over -3-7i}=\]
\[\LARGE {i\over -3-7i}\cdot {-3+7i \over -3+7i }=\]
\[\LARGE {-3i+7i^2 \over (-3)^2-(7i)^2 }=\]
\[\LARGE {-3i+7\cdot (-1 ) \over 9-49\cdot (-1) }=\]
can you do it now ?.. :)