Answer:
[tex]x[/tex] = [tex]\frac{7}{6}[/tex]
Steps:
3[tex]\sqrt{4x^{2} }[/tex]+2 = 9
3[tex]\sqrt{4x^{2} }[/tex] = 9-2
3[tex]\sqrt{4x^{2} }[/tex] = 7
[tex]\sqrt{4x^{2} }[/tex] = 7 ÷ 3
[tex]\sqrt{4x^{2} }[/tex] = [tex]\frac{7}{3}[/tex]
[tex]4x^{2}[/tex] = [tex](\frac{7}{3})^{2}[/tex]
[tex]4x^{2}[/tex] = [tex]\frac{49}9}[/tex]
[tex]x^{2}[/tex] = [tex]\frac{49}9}[/tex]÷4
[tex]x^{2}[/tex] = [tex]\frac{49}{36}[/tex]
[tex]x^{2}[/tex] = [tex]\frac{49}{36}[/tex]
[tex]x[/tex] = [tex]\sqrt \frac{49}{36}[/tex]
[tex]x[/tex] = [tex]\frac{7}{6}[/tex]
Hope this will help :)