Answer:
x = 2
Step-by-step explanation:
By the property of intersecting chords.
BE*ED = AE*EC
[tex] \implies \: x(3x) = 4(3) \\ \\ \implies \:3 {x}^{2} = 12 \\ \\ \implies \: {x}^{2} = \frac{12}{3} \\ \\ \implies \: {x}^{2} = 4 \\ \\ \implies \:x = \pm \sqrt{4} \\ \\ \implies \:x = \pm \: 2 \\ x \: can \: not \: be \: negative \\ \\ \implies \:x = 2[/tex]
