[tex] = a ^{3} + {b}^{3} \\ = (a) ^{3} + (b) ^{3} \\ = (a + b) \: ((a)^{2} - a.b + (b) ^{2} ) \\ = (a + b) \: ( {a}^{2} - ab + {b}^{2} )[/tex]
