2:36 Expressions, Equations, Formulae & Identities | Algebra | Maths | FuseSchool
Clearly defines and contrasts expressions, equations, formulae and identities in one short lesson.
Identities, equations, expressions and formulae
Understand that different-looking expressions may be identical (and prove simple algebraic identities)
2 hand-picked video lessons for this topic, each checked for relevance and clarity, graded by difficulty and labelled by depth. Press play to watch — nothing loads from YouTube until you do.
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10:26 Equating Coefficients - Corbettmaths
Shows exactly how to prove an algebraic identity by making one side match the other.