To type math and formulas on the forum, users should utilize the [itex] ... [/itex] tags for inline formatting. For example, to display the square root of 2, one would type [itex]\sqrt{2}[/itex]. Similarly, to represent a fraction, typing [itex]\frac{1}{2}\in \mathbb{Q}[/itex] will yield the correct output. This method allows for clear and proper mathematical notation in forum discussions. Understanding these formatting guidelines is essential for effective communication of mathematical concepts.