find the value of x show all steps please

Answer:
[tex]x=8[/tex]
Step-by-step explanation:
-----------------------
hope it helps...
[tex] \sf{ {AB}^{2} \: =AC×AD } [/tex]
[tex] \sf{so, {x}^{2} = 4x(4 + 12) }[/tex]
[tex] \implies \sf{ {x}^{2} = 64}[/tex]
[tex] \pink\implies \sf{x = 8}[/tex]
Hope it helps uh :)