Question

4х в квадрате -169=0

Answer 1

= 4x^2=169
x^2=169/4
x^2=42, 25
x=6, 5

Answer 2

$4 x^{2} -169=0 \ 4 x^{2} =169$ 
1)$2 x=13\ x=6.5$
2)$2 x=-13\ x=-6.5$