Prove that. (x+y)³+(y+z)³+(z+x)³ —3(x+y)(y+z)(z+x)=2(x³+y³+z³—3xyz)

Prove that. (x+y)³+(y+z)³+(z+x)³ —3(x+y)(y+z)(z+x)=2(x³+y³+z³�

1.	Prove that. (x+y)³+(y+z)³+(z+x)³ —3(x+y)(y+z)(z+x)=2(x³+y³+z³—3xyz)
Answer» Prove that. (x+y)³+(y+z)³+(z+x)³ —3(x+y)(y+z)(z+x)=2(x³+y³+z³—3xyz)