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

A. $(x - 4) (x + 6)$
B. $(x - 4) (x + 6)$
C. $(x - 4) (x + 6)$
D. $(x - 4) (x + 6)$

Answer: Option B

Explanation:

(x - y)^2

= x^2 - 2xy + y^2

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