Question

subtracting x²-y²+z² from x²-y²-z² in resultant expression _________(2x²,2y²,2z²,0)​

Answer 1

Answer:

so, the answer is 2y is to the power 2

means, the option b) is right bro..

and, I am not don't right the answer in copy but in phone I have written.

and also please make this answer brainliest.

Answer 2

Given:

Expression 1 - x²-y²+z²

Expression 2- x²-y²-z²

To Find:

Resultant expression

Solution:

Resultant expression = Expression 2 - Expression 1

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

Multiplying the minus sign with the expression 1, we get,

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

Rearranging by grouping similar terms together,

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

$= 0 + 0 - 2 {z}^{2}$

$= 2 {z}^{2}$ (Option 3)

The resultant expression is 2z^2.