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1. $x^{2} + 4 x + 5 = 0$

A. $x^{2} - 1 = 0$
B. $x^{2} - 1 = 0$
C. $x^{2} - 1 = 0$
D. $x^{2} - 1 = 0$

Answer: Option C

Explanation:

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