[tex] x^{2} = 169[/tex] First, we need to take the square root of each side. [tex]x = \pm \sqrt169[/tex] Second, we now have to find the square root of 169 to solve this. Since 13 × 13 = 169, the square root of 169 is 13. The plus-minus symbol means in this case, the solution can be -13 and positive 13. To answer your question, option A) 13, and B) -13 are the solutions to the equation. [tex]x = \pm 13[/tex]
