Question

1 by x y z Into X square + Y square + Z square + 2 into 1 by X + 1 by Y + 1 by Z​

Answer 1

We know, x³ + y³ + z³ - 3xyz = (x + y + z)(x² + y² + z² - xy - yz - zx )= 1/2(x + y + z )[2x² + 2y² + 2z² - 2xy ...