Respuesta :
Answer:
+7 / - 7
Step-by-step explanation:
We will take the square root of x as well as the square root of 49 to get rid of the exponent (2).
[tex] {x}^{2} = 49[/tex]
[tex] \sqrt{ {x}^{2} } = \sqrt{49} [/tex]
[tex]x = + 7[/tex]
[tex]x = - 7[/tex]