Subtract from both sides of the equation.
To remove the radical on the left side of the equation, square both sides of the equation.
Simplify each side of the equation.
Multiply the exponents in .
Apply the power rule and multiply exponents, .
Cancel the common factor of .
Cancel the common factor.
Rewrite the expression.
To rewrite as a function of , write the equation so that is by itself on one side of the equal sign and an expression involving only is on the other side.
Write as a Function of y y+ square root of x=12