Question

please answer the question ​

Answer 1

Answer:

x=-1, y=2

Does, x^2+y^2-2xy

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

1+4-4

1+0

1

Thus, the answer is 1.

Answer 2

Answer:

x = -1,y = 2

question

x²+y²-2xy {(a+b)² = a²+b²-2ab}

= (x+y)²

= (-1+2)²

= 1²

= 1 is the answer.