Question

Simplify: x2-y2- 1, y2-1 - x2, 1-x2-y2​

Answer 1

Answer:

-x2-y2-1

Step-by-step explanation:

X2-y2-1,y2-1-x2,1-x2-y2

x2-x2-x2-y2-y2+y2-1-1+1

x2-x4-y4+y2-2+1

-x2-y2-1

I it's help you

Answer 2

Answer:

X2 - y2 -1

Step-by-step explanation:

hope it's helpful

thank you