To accomplish the objectives and to carry out the duties prescribed by this chapter or by other provisions of law, including chapter 50-22, 51-12, 51-13, 51-14, 51-16.1, or 51-18, the attorney general, in addition to other powers conferred upon the attorney general by this chapter, may issue subpoenas to any person, administer an oath or affirmation to any person, conduct hearings in aid of any investigation or inquiry, and prescribe forms and adopt rules as may be necessary.