Question

Show that W cube + C cube + Y cube = 3WCY

Answer 1

let's take W=x, C=y, Y=z.

now , if (x+y+z)=0

then,.

${x}^{3} + {y}^{3} + {z}^{3} - 3xyz = 0 \\ = {x}^{3} + {y}^{3} + {z}^{3} = 3xyz$

hope this helped you