Question

add the following x²-y²-1,y²-1-x²,1-x²-Y² step by step ​

Answer 1

Answer:

I ain't copying the question

Step-by-step explanation:

(x²-y²-1)+(y²-1-x²)+(1-x²-y²)

= x²-y²-1+y²-1-x²+1-x²-y²

Cancel x² & -x², -y²& y², -1 & 1

= -1-x²-y²