It will be assumed that any expression underneath a radical is a nonnegative real number.
So, for example
= a, a 0.
 Steps to Solving Radical Equations

 Rewrite the equation so that one radical containing a variable is by itself on
one side of the equation.
 Raise each side of the equation to a power equal to the index of the radical.
(The index of a radical is discussed in section 1
of this chapter.)
 Collect and combine like terms.
 If the equation still contains a term with a variable under a radicand,
repeat steps 1 through 3.
 Solve the resulting equation for the variable.
 Check all solutions in the original equation for extraneous solutions.
