prove that a³ + b³+ c³ - 3abc = ( a + b + c)( a² + b² + c ² - ab - bc - ca )
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prove that a³ + b³+ c³ - 3abc = ( a + b + c) ( a² + b² + c ² - ab - bc - ca )
#a3+b3+c3-3abc#
#a3+b3+c3-3abc# formula proof
#polynomials #