KnowraAlgebraic identityLinked fromLinked fromThe 9 pages that link to Algebraic identity, each with the reason it gives.All 9Related 5Narrower topic 3Compared with 1Geometric seriesRelated: The finite-sum formula is an identity obtained by multiplying and subtracting expressions.Law of cosinesNarrower topic: Rearranging the law isolates a side, an angle cosine, or a squared length.Quadratic formulaRelated: The derivation relies on identities such as expanding a squared binomial.Algebraic expressionCompared with: An identity relates expressions through an always-true equality.Multinomial theoremNarrower topic: The multinomial formula is an identity, independent of particular variable values.Pythagorean trigonometric identityRelated: Rearranging and dividing the equation generates equivalent forms with restricted domains.Stewart's theoremNarrower topic: Stewart’s theorem is an identity, not an approximation or a construction procedure.Geometric mean theoremRelated: The squared-length equation can be checked and rearranged as an algebraic identity.Law of cotangentsRelated: The law can be used to replace a pairwise cotangent sum with 1.