Question

prove that (a+b+c)³–a³–b³–c³=3(a+b)(b+c)(c+a)​

Answer 1

Step-by-step explanation:

1. First of you solve left hand side and after that you solve right hand side because this question solve both sides
2. (A+b+c) ³ =a³+b³+c³+3a²(ab+bc+ca) +3b²(ab+bc+ca)+3c²(ab+bc+ca)-3abc