Answer: 3[tex]\sqrt{x} 7[/tex]
Step-by-step explanation:
3 under root 7
[tex] \sf {3{\sqrt{7}}} \\\\ \implies \sf{3.7^{\dfrac{1}{2}}} \\\\ \implies \sf{ (3^2)^{\dfrac{1}{2}}} \times 7^{\dfrac{1}{2}} \\\\ \implies \sf{ (9\times7)^{\dfrac{1}{2}}} \\\\ \implies \sf{63^{\dfrac{1}{2}}} [/tex]
