Question

What should be subtracted from x2 + y2– 2xy to get x2 - y??
a.-2y2 + 2xy - 2x
b. 2y2 - 2xy
C. -2y2 + 2xy
d. 2y4​

Answer 1

Step-by-step explanation:

let the number be X

x2 + y2 - 2xy - X =x2-y

...now solve equation