Question

if x=1 and y=-1 find the value of the following
x²+y²-2xy​

Answer 1

Answer:

1+1-2.1.-1=2-2=0

hope it helps you

Answer 2

Answer:

0

Step-by-step explanation:

x² + y² - 2xy = ( x - y )²

= [ ( 1 )² - ( -1 )² ]

= ( 1 - 1 )

= 0