Question

(x-y) ²+2(x-y) (x+y) +(x+y) ²​

Answer 1

Answer:

(x-y)² + (x+y)²

Step-by-step explanation:

(x-y) ²+2(x-y) (x+y) +(x+y) ²​ is in the form of a² + 2ab + b²

So,  a² + 2ab + b² = a² + b²

Here , a = (x-y) and b = (x+y)

So,  (x-y) ²+2(x-y) (x+y) +(x+y) ²​ = (x-y)² + (x+y)²

Answer 2

Answer:

4x2-2y2

Step-by-step explanation:

x2-y2+2x-2y(x +y)+x2 +y2

x2-y2 +2x2-2y2+x2+y2

2x2 +2x2 -2y2

4x2-2y2