X 2 -b b2-4ac2a 5 12 2. A second method of solving quadratic equations involves the use of the following formula. The Quadratic Formula x bb24ac 2a x b b 2 4 a c 2 a is found by completing the square of the quadratic equation.
First we bring the equation to the form ax²bxc0 where a b and c are coefficients.
X 6 4 10. X 1 -b b2-4ac2a 5 12 3. X 02 or x 1. 207 Starting with a quadratic equation in standard form ax 2 bx c 0 Divide each side by a the coefficient of the squared term.