Question

(x+y)^2+(x-y)^2-(x^2-y^2)

Answer 1

(x+y)²+(x-y)²-(x²-y²)

(x²₊2xy₊y² )₊(x²-2xy₊y²) - (x²-y²)

2(x²₊y²) - (x²-y²)
 
           2


 Rpta: 2