Subtract 9 x 9 x from 7 x - 7 x. In the standard form. If the discriminant is not a perfect square then solve using the quadratic formula.
The roots or solutions of a quadratic equation are its factors set equal to zero and then solved for x.
Formula i is used for the formation of a quadratic equation when its roots are given. For example a quadratic equation has a root of -5 and 3. Where abc a b c are all real numbers. Roots are real and different -3 -4 Input.