Question

what is the exact formula for a cube+ b cube + c cube - 3 ABC

& for a+b+c whole cube formula ?​

Answer 1

Step-by-step explanation:

a³ + b³ + c³ - 3abc

= (a+b+c){ a²+b²+c²-(ab+bc+ac)}

(a+b+c)³

= (a+b+c)(a²+b²+c²+2ab+2bc+2ac)

Answer 2

${a}^{3} + {b}^{3} + {c}^{3} - 3abc \: = (a + b + c) \: ( {a}^{2} + {b}^{2} + {c}^{2} - ab - bc - ca)$