To display square roots, superscripts, and subscripts in the forum, users can utilize LaTeX formatting. The inline format for square roots is achieved with \sqrt{a_1^2}, while the display format uses $$\sqrt{a_1^2}$$. The discussion emphasizes that these formatting options are detailed in the forum's FAQ and HowTo sections. Proper usage of these symbols enhances clarity in mathematical expressions. Understanding LaTeX is essential for effective communication in technical discussions.