Of the two sentences below, which one is correct and what is the related grammatical concept?
- I can't figure out where the above identity comes from.
- I can't figure out where does the above identity come from.
Of the two sentences below, which one is correct and what is the related grammatical concept?
- I can't figure out where the above identity comes from.
- I can't figure out where does the above identity come from.
[1] I can't figure out [where the above identity comes from].
[2] I can't figure out [where does the above identity come from].
[1] is correct. The expression "where the above identity comes from" is a subordinate interrogative clause (embedded question) functioning as complement of "figure out". Subordinate interrogatives do not (normally) have subject-auxiliary inversion and hence [2], which does contain inversion, is incorrect.
The meaning is "I can't figure out the answer to the question 'Where does the above identity come from?"'