Question

Subtracting x2 - y2 + z2from x2- y2 - z2, the resultant expression is _______ (2x2,2y2, -2z2,૦)​

Answer 1

Answer:

$- 2 {z}^{2}$

Step-by-step explanation:

${x}^{2} - {y}^{2} - {z}^{2} - ( {x}^{2} - {y}^{2} + {z}^{2} )$

=

${x}^{2} - {y}^{2} - {z}^{2} - {x}^{2} + {y}^{2} - {z}^{2}$

=

$- 2 {z}^{2}$

Answer 2

Answer:

−2z

2

Step-by-step explanation:

{x}^{2} - {y}^{2} - {z}^{2} - ( {x}^{2} - {y}^{2} + {z}^{2} )x

2

−y

2

−z

2

−(x

2

−y

2

+z

2

)

=

{x}^{2} - {y}^{2} - {z}^{2} - {x}^{2} + {y}^{2} - {z}^{2}x

2

−y

2

−z

2

−x

2

+y

2

−z

2

=

- 2 {z}^{2}−2z

2

Step-by-step explanation:

hope it's help U