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 ((q+3)12)2.
Apply the power rule and multiply exponents, (am)n=amn.
Cancel the common factor of 2.
Cancel the common factor.
Rewrite the expression.
Raise 9 to the power of 2.
Move all terms not containing q to the right side of the equation.
Subtract 3 from both sides of the equation.
Subtract 3 from 81.
Solve using the Square Root Property square root of q+3=9