Question

If x=1,y=-1,find the value of x2

+y2

+xy​

Answer 1

Answer:

(1)2+(-1)2+(1)(-1)

2-2-1

-1

this is answer

Answer 2

Answer:

${x}^{2} + {y}^{2} + xy$

${1}^{2} + {( - 1)}^{2} + 1 \times ( - 1)$

$1 + 1 +( - 1)$

$2 - 1$

$1$