Standard form of quadratic equation is ax 2 bx c where a b and c are coefficient and real numbers and also a 0. The standard form of a quadratic equation is. The term b 2-4ac is known as the determinant of a.
If a is equal to 0 that equation is not valid quadratic equation.
If discriminant is greater than 0 the roots are real and different. In quadratic equation ax2 bx c 0 or x b2a2 D4a2 If a 0 minimum value 4ac b24a at x -b2a. The quadratic formula gives that the roots of this equation are 2 and 4 and both of these are real so the equation has two real roots. Standard form of quadratic equation is ax 2 bx c where a b and c are coefficient and real numbers and also a 0.