@nancygoyal09: Struggling with brackets vs. parentheses in algebra? Here is a simple breakdown: Square Brackets [ ]: Closed interval (includes the number) Parentheses ( ): Open interval (does not include the number) "AND" Inequalities: Represented as a single bounded interval like (1, 5] "OR" Inequalities: Joined together using the union symbol U like (-∞, 1) U [5, ∞) Save this cheat sheet for your next math test! 📌📚 Drop your math problem in the comment box if you need help👇👇 #math #algebra #intervalnotation #mathtips #studyhacks