Factorize: x2 – 1 – 2a – a2. – InterviewSolution

1.

Factorize: x2 – 1 – 2a – a2.

Answer»

x² – 1 – 2a – a²

= x² – (1 + 2a + a² )

= x² – (a + 1)²

= (x – (a + 1)(x + (a + 1)

= (x – a – 1)(x + a + 1)

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