[tex]7 \sqrt{x}=14[/tex] is a radical equation
A radical equation is an equation that has a variable under the radical (root)
- From the given option [tex]x+\sqrt{5}=12[/tex], you can see that a constant is a value inside a radical, not a variable. Hence this equation is not a radical equation.
- The same is applicable to [tex]x^2=16 \ and \ 3+x \sqrt{7}=13[/tex], the variable is not under the radical function.
- Hence the only option that is a radical equation is [tex]7 \sqrt{x}=14[/tex] since x is under the radical function.
Complete questions
which of the following is a radical equation?
1. x+sqrt(5)=12
2. x^2=16
3. 3+xsqrt(7)=13
4. 7sqrt(x)=14
Learn more on radical equation here: https://brainly.com/question/8606917