Solve by extracting square roots.
-$$x ^ { 2 } = 16$$
A) $\{ 4 \}$
B) $\{ 5 , - 5 \}$
C) $\{ 4 , - 4 \}$
D) $\{ 8 \}$

Name: Solve by extracting square roots. -\[x ^ { 2 } = 16\] A) $\{ 4 \}$ B) $\{ 5 , - 5 \}$ C) $\{ 4 , - 4 \}$ D) $\{ 8 \}$
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Question

Quizplus · Accepted Answer

Taking the square root of both sides of the equation yields $x=\pm 4$. Therefore, the solution set is $\{4, -4\}$, which corresponds to choice C.

Solve by Extracting Square Roots x2=16x ^ { 2 } = 16x2=16

Solve by Extracting Square Roots $x ^ { 2 } = 16$