1 Factoring Formulas - University of Colorado Boulder

Formula Sheet 1 Factoring Formulas For any real numbers a and b, (a+ b)2 = a2 + 2ab+ b2 Square of a Sum (a b)2 = a2 2ab+ b2 Square of a Di erence a2 b2 = (a b)(a+ b) Di erence of Squares a3 b3 = (a b)(a2 + ab+ b2) Di erence of Cubes a3 + b3 = (a+ b)(a2 ab+ b2) Sum of Cubes 2 Exponentiation Rules For any real numbers a and b, and any rational numbers

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