Question

factorise it 1 + 2 a b minus A square minus b square​

Answer 1

Answer:

1+2ab-a²-b²

Step-by-step explanation:

1-(a²-2ab+b²)

1-(a-b)². {a²-b²= (a-b) (a+b)

(1-a-b)(1+a-b)

Answer 2

ANSWER

1 - ( a^2 - 2ab + b^2 )

As we know that ,

a^2 - b ^2 = ( a - b ) ( a + b )

Then ,

1- (a - b ) ^ 2

(1 - a - b ) ( 1 + a - b ) Answer....