Function: minus(numbers("xxy"), numbers("xxr")) if square(minus(numbers("xxy"), numbers("xxr"))) > numbers("xxy") if minus(numbers("xxy"), numbers("xxr")) > square(minus(numbers("xxy"), numbers("xxr"))) else numbers("xxy") if square(minus(numbers("xxy"), numbers("xxr"))) > minus(numbers("xxy"), numbers("xxr")) else numbers("xxr") else numbers("xxr") if square(minus(numbers("xxy"), numbers("xxr"))) > minus(numbers("xxy"), numbers("xxr")) else numbers("xxy")