Solve the equation by completing the square.
-$$x ^ { 2 } - 4 x - 45 = 0$$
A) $\{ \pm 3 i \sqrt { 5 } \}$
B) $\{ - 40 , - 5 \}$
C) $\{ 9 , - 5 \}$
D) $\{ - 9,5 \}$

Name: Solve the equation by completing the square. -\[x ^ { 2 } - 4 x - 45 = 0\] A) $\{ \pm 3 i \sqrt { 5 } \}$ B) $\{ - 40 , - 5 \}$ C) $\{ 9 , - 5 \}$ D) $\{ - 9,5 \}$
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Question

Quizplus · Accepted Answer

Completing the square gives $(x - 2)^2 = 49$, leading to solutions $x = 9$ and $x = -5$.

Solve the Equation by Completing the Square x2−4x−45=0x ^ { 2 } - 4 x - 45 = 0x2−4x−45=0

Solve the Equation by Completing the Square $x ^ { 2 } - 4 x - 45 = 0$