Yes, "problem-solving" is hyphenated when used as a compound adjective before a noun, such as in "problem-solving skills." However, when used as a noun, it can be written without a hyphen, as in "Her problem solving is effective."
jfjh
It is not hyphenated.
Motorcycle is not hyphenated
No it's not hyphenated.
words are only hyphenated when they have a separate meaning when separated than they do when hyphenated
Yes it should be hyphenated.
No, "hardworking" is not hyphenated.
It can be. Some words can be seen both hyphenated and non-hyphenated.
No. Well above is not hyphenated.
peace of mind is not hyphenated.
No, "homework" shouldn't be hyphenated.
Yes it should be hyphenated.