Question

please solve this question i really need the solution right now question 13

Answer 1

13.

Given x + y + z = 0

= > x + y = - z.

On cubing both sides, we get

= > (x + y)^3 = (-z)^3

= > x^3 + y^3 + 3xy(x + y) = -z^3

=  >x^3 + y^3 + 3xy(-z) = -z^3

= > x^3 + y^3 - 3xyz = -z^3

= > x^3 + y^3 + z^3 = 3xyz.



Hope this helps!

Answer 2

hey here is your answer using identity

I hope it helps!