You can put this solution on YOUR website! Well, first we need to get rid of the sqare root. To do this, we need to get it on its own:
Then square both sides:
Expand the brackets:
Get everything on one side:
In this case, the easiest way to solve it is to use the quadratic equation:
You can put this solution on YOUR website! If we subtract 3 from both sides of the equation we get
To get rid of the radical we square both sides of the equation
Combine like terms
This is a quadratic equation so we will have 2 answers
Use the quadratic equation to solve and and