In algebra, letters are used to stand for values that can change (variables) or for values that are not known (unknowns). A term is a number or letter on its own, or numbers and letters multiplied ...

In this video, we provide essential "math help" by addressing "common math mistakes" students make when simplifying "algebraic expressions". This "algebra" tutorial focuses on why you cannot simply ...

Removing brackets is to multiply the term outside the brackets by each term inside - also known as the distributive law. Use FOIL to remove a pair of brackets then simplify by collecting like terms.