√100 + 4√10 + 3 - 8√10
= √10^2 + 4√10 + 3 - 8√10
= 10 + 4√10 + 3 - 8√10
= 13 + 4√10 - 8√10
= 13 + √10(4 - 8)
= 13 + (-4√10)
= 13 - 4√10
or
= -4√10 + 13
Answer
B. Second one
-4√10 + 13
