Respuesta :
Answer:
4. [tex]7\sqrt{x}=14[/tex]
Step-by-step explanation:
Radical equation is a equation that has a variable under the radical .
From the given options we have radical square root
We need to choose an option that has a variable under the square root.
1.[tex]x+\sqrt{5}=12[/tex]
This equation has 5 under the radical square root. Variable is outside, So this is not a radical equation.
2. x^2=16
Here there is not radical . So this is not a radical equation.
3. [tex]3+x\sqrt{7}=13[/tex]
This equation has 7 under the radical square root. Variable is outside, So this is not a radical equation.
4. [tex]7\sqrt{x}=14[/tex]
This equation has x under the radical square root. So this is a radical equation.
