Question

When x=1 and y=2, then x²-2xy+2=?​

Answer 1

Answer:

x+y=2,x2+y2=2x+y=2,x2+y2=2

x2+y2=2x2+y2=2

(x+y)2=22(x+y)2=22

x2+y2+2xy=4x2+y2+2xy=4

2+2xy=42+2xy=4

2xy=4−22xy=4−2

2xy=22xy=2

xy=2/2xy=2/2

xy=1xy=1

here is your answer...

hopes it helps you...

Answer 2

Answer:

Mark Brainliest

Step-by-step explanation:

1- 2×1×2+2

=1-4+2

=1-6

=-5