Now lets see where the quadratic formula comes from by first solving a general quadratic equation of the form ax 2 bx c 0 where a is the leading coefficient and c is the constant the y-intercept of the parabola. But there is a way to rearrange it so that x only. Which can be rewritten as The formula usually has -4ac because the quadratic equation is more usually written in the form The fact that taking a square root can give a positive or a negative answer leads to the remarkable result that a quadratic equation has two solutions.
Which can be rewritten as The formula usually has -4ac because the quadratic equation is more usually written in the form The fact that taking a square root can give a positive or a negative answer leads to the remarkable result that a quadratic equation has two solutions.
It stems from the fact that any quadratic function or equation of the form can be solved for its roots. It stems from the fact that any quadratic function or equation of the form can be solved for its roots. X b b 2 4ac 2a. To start move the constant to the other side of the equation.