Question

find the value of (x+y) (x+y) at x =1,y=0
​

Answer 1

Answer:

if

y

x

+

x

y

=−1

simplifies to x

2

+xy+y

2

=0

as (x

3

−y

3

)=(x−y)(x

2

+xy+y

2

)=0 using above result