Solutions:
A radical equation is an equation in which a variable is under a radical.
Equations a, c, and d are radical equations, because all of them have variables under the radical.
Equation b is not a radical equation as 5 is not a variable.
Solutions:
A radical equation is an equation in which a variable is under a radical.
Equations a, c, and d are radical equations, because all of them have variables under the radical.
Equation b is not a radical equation as 5 is not a variable.