Can you explain how to work the $3$rd row

CSCI $3160$ Homework $1$

Part I. Complete the following table.

$\backslash$table$[[,$Machine addition,$\backslash$table$[[$Is the machine result correct if the$],[$numbers are interpreted as Unsigned?$]],\backslash$table$[[$Is the machine result correct if the$],[$numbers are interpreted as Signed?$]]],[,$Problem,Result,$\backslash$table$[[$Is Result$],[$correct$?]],$Why?$/$Why not?,CF$,\backslash$table$[[$Is Result$],[$correct$?]],$Why?$/$Why not?,OF$],[1,05+FD,,,,,,,],[2,FC+FD,,,,,,,],[3,4576+6285,,,,,,,],[4,E2CA+8BDF,,,1,,,,]]$

For each problem above, show all work for the following:

add the numbers in Hex $($or binary$)$

check whether the result is correct as Unsigned by converting the problem and result into decimal

check whether the result is correct as Signed by converting the problem and result into decimal