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List of Formulas in Algebra

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Algebraic Identities

(a + b)2 = a2 + 2ab + b2 (a – b)2 = a2 – 2ab + b2 a2 – b2 = (a + b)(a – b) (a + b)3 = a3 + b3 + 3ab(a+b) (a – b)3 = a3 – b3 – 3ab(a-b) (a + b + c)2 = a2 + b2 + c2 + 2ab + 2bc + 2ca a3 + b3 + c3 – 3abc = (a+b+c)(a2 + b2 + c2 -ab – bc -ca) a3 – b3 = (a-b)(a2 + ab + b2) a3 + b3 = (a+b)(a2 – ab + b2)