When solving radical equations we isolate the radical, and then
square both sides of the equation. We must always check our answers
in the original equation, because squaring both sides of an
equation sometimes generates an equation that has roots that are
not roots of the original equation.
We are to solve the following radical equation:
First we isolate our radical:
Then we square both sides and solve our equation:
Lastly we plug our x into our original equation to check:
The solution checks.
Videolesson: solve the following radical expression