Answer
Does not make sense.
Work Step by Step
No, there is a term missing (the $ bx $ term), so the square-root-property method would be more appropriate.
$25x^{2}=169$
$5x=\pm 13$
$ x=\displaystyle \pm\frac{13}{5}$
Note:
The quadratic formula would provide a solution, but
the above method is quicker/more efficient.
