Question

Factorise by difference of two squares:
x²-1 -2a-a²​

Answer 1

Step-by-step explanation:

Hola there,

=> x² - 1 - 2a - a²

=> x² - (a² + 2a + 1)

=> x² - (a + 1)²

=> (x - (a + 1))(x + (a + 1))

=> (x - a - 1)(x + a + 1). ...Ans

Hope this helps....:)

Answer 2

Answer:

First make 1-2a-a² in (a+b)² and then use formula of difference of two squares.