Question

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

Answer 1

Answer:

answer8yz please follow

Answer 2

Answer:

➡(x²-y²-z²) -(x²-y²+z²)

⚫On breaking the bracket

➡x²-y²-z²-x²+y²-z²

⚫Doing x²-x= 0 , -y²+y²=0, we get

➡-2z²

Hope this is helpful to you!