Question

The sum of 3 nos is 0, the product of it is 30. find the cube of it.

Answer 1

Answer:

Step-by-step explanation:

x^3 + y^3 + z^3 =

= 3xyz + (x + y + z)(x^2 + y^2 + z^2 - xy - yz - zx)

x + y + z = 0, then

x^3 + y^3 + z^3 = 3xyz = 3×30 = 90.