Question

Find the midpoint of A ( x + y , x - y ) and B ( x - y , x + y )​

Answer 1

A-- x+y, x-y

B-- x-y, x+y

Midpoint C = x1+x2/2= x+y+x-y/2=x (abscissa)

y1+y2/2= x-y+x+y/2= x (ordinate)

Therefore coordinates of midpoint C is (x,x)

Answer 2

holy moly it's wrong aha