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1. $x^{2} - y (y - 2) - 1$

A. $(x - y - 1) (x - y + 1)$
B. $(x - y - 1) (x - y + 1)$
C. $(x - y - 1) (x - y + 1)$
D. $(x - y - 1) (x - y + 1)$

Answer: Option B

Explanation:

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