Question

Factorise:. 1-2ab(a2+b2)​

Answer 1

Answer:

1 - a² - b² - 2ab

Step-by-step explanation:

(a+b)² = a² + b² + 2ab

Therefore, a² + b² = (a+b)² - 2ab

Now, putting the values,

= 1 - 2ab - [(a+b)² - 2ab]

= 1 - 2ab - (a+b)² + 2ab

= 1 - [a² + b² + 2ab]

= 1 - a² - b² - 2ab