Question

12. 1-2ab-(a + b2) = ?​

Answer 1

Answer:

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Step-by-step explanation:

,

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)