Question

what is the diffrence between a radical equation and an equation simply containing a radical

Answer 1

well, i assume a radical equation would be something like f(x) = sqrt(x)

in that case, the variable is contained inside of the radical. thus, the output f(x) depends on what is under the radical

an equation that simply just has a radical would be like f(x) = sqrt(2) * x

now you see that the function is not dependent on the value underneath the square root - it's just a scalar number now, and the variable is outside the radical

Answer 2

another way of writing it: