Question

Without actually calculating the cubes, find the values of 55 3 - 25 3 - 30 3

Answer 1

if x+y+z=0 then x³+y³+z³=3xyz

x=55,y=-25, z=-30

x+y+z =55-25-30 =0
therefore

55³+(-25)³+(-30)³ =3xyz

= 3*55*(-25)*(-30)
=123750

Answer 2

Step-by-step explanation:

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