Question

a^2+b^2-1-2ab how to factorise​

Answer 1

Answer:

1-2ab-(a²+b²)

=1-(2ab+a²+b²)

=1-(a+b)²

We know that x²-y²=(x-y)(x+y)

In the equation we got, x=1 and y=(a+b)

1²-(a+b)²=(1-a-b)(1+a+b)

Answer 2

aa square + b square minus 1 minus 2 a b is equals to a square + b square minus 2 a b minus 12 a plus b ka whole square minus one a + b is equals to plus minus root 1 is equals to minus (1 + b) close and is equals to 1 minus b