Answer:
x = 8
Explanation:
The secant and tangent theorem says that:
So, replacing the values of each segment, we get:
[tex]x^2=(12)(4)[/tex]Then, solving for x, we get:
[tex]\begin{gathered} x^2=64 \\ x=\sqrt[]{64} \\ x=8 \end{gathered}[/tex]Therefore, the value of x is 8.