Question

a2—b2—a—b. factorise

Answer 1

a2-b2-1(a+b)
=(a+b)(a-b)-1(a+b)
=(a+b)(a-b-1)

Answer 2

Hi Dude !!!

Your answer :

a² - b² - a - b

= ( a + b ) × ( a - b ) - a - b ...

I used the Equation x² - y² = ( x + y ) × ( x - y )

= ( a + b ) × ( a - b ) - ( a + b )

= ( a + b ) × [ ( a - b ) - 1 ]

Now I took out ( a + b ) as common !!

= ( a + b ) × ( a - b - 1 ) ✌✌ is the answer