Home/Algebra/Notable products and identities/Square of a difference4. Notable products and identitiesSquare of a differenceLevel: fundamentalIn 4. Notable products and identitiesFormulaCopy LaTeX(a−b)2=a2−2ab+b2(a-b)^2=a^2-2ab+b^2(a−b)2=a2−2ab+b2Tagsalgebraalgebra formulaidentitiesproducts notableDetailExpansion of the square of a difference.Explore the ideaFound an error? Contact us.Related formulasRelatedSquare of a sum(a+b)2=a2+2ab+b2(a+b)^2=a^2+2ab+b^2(a+b)2=a2+2ab+b2Open formulaOpen in sectionRelatedPerfect-square trinomiala2±2ab+b2=(a±b)2a^2\pm2ab+b^2=(a\pm b)^2a2±2ab+b2=(a±b)2Open formulaOpen in section