SOLUTION: Please help me factor this: 1-a^2-2ab-b^2

Question 690122: Please help me factor this: 1-a^2-2ab-b^2
Answer by Edwin McCravy(20056) (Show Source): You can put this solution on YOUR website!

1 - a�-2ab-b^2

Factor -1 out of the last three terms:

1 - (a�+2ab+b�)

Factor the parentheses:

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

1 - (a+b)�

1� - (a+b)�

That's the difference of squares:

[1 - (a+b)][1 + (z+b)]

[1 - a - b][1 + a + b]

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

Edwin

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