Question

the value of x^2-2xy+y2 when x=1 and y=-2 is​

Answer 1

Answer:

9

x^2-2xy+y^2

=(x-y)^2

=(1+2)^2

=9

Answer 2

Answer:

1

Step-by-step explanation:

given it ,x^2 - 2xy + 2y

so , find the x=1 ,y=2 rkhe pr

= 1^2- 2× 1 × 2 + 2×2

= 1 - 4 + 4

= 5 - 4

= 1 answer