Answer:
[tex]x=\sqrt{7}[/tex]
Step-by-step explanation:
[tex]7x^2=49[/tex]
Dividing both sides by 7 we get
[tex]\frac{7x^2}{7}=\frac{49}{7}[/tex]
[tex]x^2=7[/tex]
taking square root on both hand sides we get
[tex]\sqrt{x^2}=\sqrt{7}[/tex]
[tex]x=\sqrt{7}[/tex]
