By the power rule, the radical expression become [tex](7^{\frac{1}{2} })^2 = 7^{\frac{2}{2} }[/tex]. Hence expressing [tex]7^{\frac{1}{2} }[/tex] as a radical is [tex]\sqrt{7}[/tex]
Given the expression;
[tex](\sqrt{7} )^2[/tex]
This is expressed as;
[tex](\sqrt{7})^2 = (7^{\frac{1}{2} })^2\\(\sqrt{7})^2 = 7^{\frac{1}{2} \times 2}\\(\sqrt{7})^2=7^1\\(\sqrt{7})^2 =7[/tex]
By the power rule, the radical expression become [tex](7^{\frac{1}{2} })^2 = 7^{\frac{2}{2} }[/tex]. Hence expressing [tex]7^{\frac{1}{2} }[/tex] as a radical is [tex]\sqrt{7}[/tex]
Learn more on radical function here: https://brainly.com/question/13430746