Home/Algebra/Notable products and identities/Difference of squares4. Notable products and identitiesDifference of squaresLevel: fundamentalIn 4. Notable products and identitiesFormulaCopy LaTeXa2−b2=(a−b)(a+b)a^2-b^2=(a-b)(a+b)a2−b2=(a−b)(a+b)Tagsalgebraalgebra formulaidentitiesproducts notableDetailIdentity for expansion and factorization.Explore the ideaFound an error? Contact us.Related formulasRelatedDifference of squaresa2−b2=(a−b)(a+b)a^2-b^2=(a-b)(a+b)a2−b2=(a−b)(a+b)Open formulaOpen in sectionRelatedRationalization by conjugates1a+b=a−ba2−b\frac1{a+\sqrt b}=\frac{a-\sqrt b}{a^2-b}a+b1=a2−ba−bOpen formulaOpen in section