9-4 Solving Quadratic Equations and Using Square Roots – We learned that when the quadratic equation is in the form ax2 + bx = c, it can be solved by isolating the ax2 term, simplifying to remove the coefficients, and then taking the square root of each side of the equation. We practiced several of these type of problems where we take the square root and have two possible solutions. Next we reviewed completing the square to find the answers to a quadratic equation that is not able to be factored.