Question

x²-y²-xy from 1+x²+y²​

Answer 1

Answer:

So here it is I think

x2-y2-xy from 1+x2+y2 (Do not write this but here

it is written from and in from the second number comes in first place and first number comes in second place and the number which comes in second place has to change its signs)

=1+x2+y2 -(+x2 -y2 -xy)

=1+x2+y2 - x2 +y2 -xy

=1 +2y2 -xy ( x2 has been cut because one was in plus and the other one was in minus)

Hope it helps a little bit atleast sorry if I am wrong

Step-by-step explanation:

It is done no more explanation.