Which function is used to join two strings with a specified delimiter and removes blanks?

The function that is used to join two strings with a specified delimiter while also removing any leading and trailing blanks from both strings is the CATX function. This function is particularly useful when you need a clean concatenation, where the output should not include any extraneous spaces, which can often be the case when directly concatenating strings.

When using CATX, you provide the delimiter as the first argument followed by the strings you want to join. The function will effectively trim any unnecessary spaces from the strings and insert the specified delimiter between them. For example, if you have two strings with extra spaces, CATX will clean those up and produce a neatly formatted single string.

Other functions like CATS and CAT don't serve the exact purpose since CATS combines strings while removing spaces but doesn't allow specifying a delimiter, and CAT simply concatenates strings without removing any spaces. CONCAT is also not suited for this task as it combines strings without space removal or additional delimiters. Hence, CATX is the function that meets the criteria outlined in the question.