Question

1+2ab-(a^2+b^2)factorise the following ​

Answer 1

Step-by-step explanation:

1+2ab-(a²+b²)

=1+2 ab-a²-b²

=1-(a²+b²-2ab)

=1²-( a-b)²

={1+(a-b)}{1-(a-b)}

=(1+a-b)(1-a+b). .(answer)

hope you got it

Answer 2

Step-by-step explanation:

(a-b)(b-a) +1 is the answer