Question

Expand the following :- ​

Answer 1

Answer:

${( x + y - z)}^{2} = {x}^{2} + {y}^{2} + {z}^{2} + 2xy - 2yz - 2zx$

Answer 2

Answer:

(x + y - z) ² = x² + y ² + z² + 2 (x) (y) - 2 (y) (z) - 2 (z) (x)