Factorize :-
x^2 - a^2 - 2a - 1
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Factorize :-
x^2 - a^2 - 2a - 1
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x^2 - a^2 - 2a - 1 = 0
x^2 - (a^2 + 2a + 1) = 0
x^2 - (a + 1)^2
(x - (a + 1)) (x + (a + 1))
(x - a - 1) (x + a + 1)
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