Solve the equation by completing the square. 1 3x+: +X- 0 12 How is the equation solved by completing the square? Select the correct choice below and, if necessary, fill in the answer box(es) within your choice. OA. -bb2-4ac Use the formula x= with a = b= and c = 2a OB. Rewrite the equation so the constant term is on the right side and the coefficient of x is equal to 1. Add take the square root and isolate x. 2 to both sides and factor the left side as a perfect square O C. Take the square ro 2 Write the equation in the form x =p by moving the constant term and x-term to the right side of the equation, and then dividing both sides by solve for x. OD. Set the equation equal to 0 and factor the ramzero side of the equation. Set each factor equal to 0 and solve.