Question 718525
First step is wrong.  Subtract a quantity in parenthese means you are subtracting each term that is grouped.


{{{(–8–6i)–(5+3i)}}}
= –8 – 6i – 5 + 3i  SHOULD BE {{{-8-6i-5-3i}}}


Another way to see this is {{{(-8-6i)-(5+3i)=-8-6i+(-1)(5+3i)}}}
={{{-8-6i+(-1)(5)+(-1)(3i)}}}
={{{-8-6i-5-3i}}}



(No reason why the very first line above will not render.)