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Completing the Square

10. Quadratic Equations and Functions / Completing the Square / 문제 2

문제 2

Solve $x^{2} - 4 x - 5 = 0$ by completing the square.

A

$x equals 5$

$x = - 1$

B

$x equals 5$

$x equals 1$

C

$x = - 3$

$x equals 7$

D

$x equals 1$

$x = - 9$