Question

[(a + b)2 + (a - b)2 - 2(a2 + b2)] equals​

Answer 1

Answer:

(a+b)² = a² + b² + 2ab

(a-b)2 a² + b² - 2ab

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

→ a² + b² + 2ab + a² + b² - 2ab

2a² + 2b²

→ (a+b)²+(a-b)² = 2(a²+b²)