Question

plz answer this fast .......its very urgent​

Answer 1

taking LHS

= (a + b + c)³ - a³ - b³ - c³

= a³ + b³ + c³ + 3 (a +b) (b + c) (a+ c) - a³ - b³ - c³

= 3(a +b) (b + c) (a+ c)

= RHS

Answer 2

Answer:

(a+b+c)³=a³+b³+c³+3(a+b)(b+c)(c+a)

after changing of a³+b³+c³ to left hand side turn in to negative as-a³-b³-c³ then

(a+b+c)³-a³-b³-c³=3(a+b)(b+c)(c+a).