Question

(a + b)² + (a - b)² please said me answar​

Answer 1

Answer:

(a+b)2=a2+b2+2ab

(a−b)2=a2+b2−2ab

For simplicity, let:

a2+b2=x

2ab=y

That gives us (a+b)2=x+y and (a−b)2=x−y. So:

(a+b)2−(a−b)2=x+y−x−y

⟹(x−x)+(y−(−y))

⟹0+y+y=2y⟹4ab

Step-by-step explanation:

hope you understand

Answer 2

Answer:

(a+b)²-(a-b)²

a²+b²+2ab - (a²+b²-2ab)

a²+b²+2ab -a²-b²+2ab

2ab+2ab

4ab