Subjects/Algebra/Notable products and identities/Cube of a sum4. Notable products and identitiesCube of a sumLevel: fundamentalIn 4. Notable products and identitiesFormulaCopy LaTeX(a+b)3=a3+3a2b+3ab2+b3DetailExpansion of the cube of a binomial.Related formulasRelatedSum of cubesa3+b3=(a+b)(a2−ab+b2)Open formulaOpen in sectionRelatedBinomial theorem(a+b)n=k=0∑n(kn)an−kbkOpen formulaOpen in section