Find the value of x and show all steps please

Answer:
[tex]x=3[/tex]
Step-by-step explanation:
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hope it helps...
[tex] \implies \sf{(x)(4x) = (4) \: (9)}[/tex]
[tex] \implies \sf{ \frac{4 {x}^{2} }{4} } = \frac{36}{4} [/tex]
[tex] \implies \sf{ \sqrt{ {x}^{2} } = \sqrt{9} }[/tex]
[tex] \sf \boxed {x = 3}[/tex]
Thank you
Hope it helps uh :)