SOLUTION: find FACTOR OF : 1- A^2 - 2AB - B^2 Please help. Thank you. this is algebra 2

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Question 1005550: find FACTOR OF : 1- A^2 - 2AB - B^2
Please help. Thank you. this is algebra 2
Answer by ikleyn(52790) About Me  (Show Source):
You can put this solution on YOUR website!
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FACTOR OF : 1- A^2 - 2AB - B^2
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1-+A%5E2+-+2AB+-+B%5E2 = 1- %28A%5E2+%2B+2AB+%2B+B%5E2%29 =

1 - %28A%2BB%29%5E2 =     <-----     apply the formula   a%5E2-b%5E2 = (a+b)*(a-b)

= (1 - (A + B))*(1 + (A + B)) = (1 - A - B)*(1 + A + B).