simplify the expression 13+|-21-(-4)²|
\(13+|-21-(-4)^2| \\ \\ 13 + |-21-4^2| \\ \\ 13 + |-21-16| \\ \\ 13 + |-37| \\ \\ 13 + 37 \\ \\ 50 \\ \\ Answer: \fbox {50}\)