👉 Quotation marks in mathematical expressions serve to delineate specific sets of terms, distinguishing them from the rest of the equation. They can be used to mark the beginning and end of a set of terms that form a group, such as in the notation for a quadratic expression (a(b + c) + d), where the parentheses indicate that 'b + c' is a single unit. Quotation marks are also used in more complex contexts, like in the notation for a function (f(x)) or in set theory to define subsets (A ⊆ B). In these cases, they help clarify the scope and relationship of the terms within the equation or statement, ensuring clarity and precision in mathematical communication.
