Use the Square Root Property. Simplify the radical. x 2 = 169 x = ± 169 x = ± 13 Rewrite to show two solutions. x = 13 , x = − 13 \begin{array}{cccc}\begin{array}{c} \\ \\ \\ \text{Use the Square Root Property.} \\ \text{Simplify the radical.}\end{array} & & & \quad \begin{array}{ccc}{x}^{2} & = & 169 \\ x & = & \pm \,\sqrt{169} \\ x & = & \pm \,13\end{array} \\ \text{Rewrite to show two solutions.} & & & \quad x=13,\quad x=-13\end{array} Use the Square Root Property. Simplify the radical. Rewrite to show two solutions. x 2 x x = = = 169 ± 169 ± 13 x = 13 , x = − 13
원본 교재 풀이(영어) Use the Square Root Property. Simplify the radical. x 2 = 169 x = ± 169 x = ± 13 Rewrite to show two solutions. x = 13 , x = − 13 \begin{array}{cccc}\begin{array}{c} \\ \\ \\ \text{Use the Square Root Property.} \\ \text{Simplify the radical.}\end{array} & & & \quad \begin{array}{ccc}{x}^{2} & = & 169 \\ x & = & \pm \,\sqrt{169} \\ x & = & \pm \,13\end{array} \\ \text{Rewrite to show two solutions.} & & & \quad x=13,\quad x=-13\end{array} Use the Square Root Property. Simplify the radical. Rewrite to show two solutions. x 2 x x = = = 169 ± 169 ± 13 x = 13 , x = − 13