Quadratic formula

[Donald Trump]

x = -b plus or minus the square root of (b^2 - 4ac) all divided by [2a]. Used for quadratic equations where you cant factor. the equation is [ax]^2 [bx] c.

[Monty]

A handy formula easily memorized by repetition. It is used in many instances, such as trying to find the roots of an equation, or solving an equation that will not factor with integers.

To solve using the [Quadratic Formula]:

In any equation

ax^2 bx c,

The roots can be found by substituting into:

-b( ,-)sqrt/2a

OR

Negative B plus or minus the square root of B squared minus 4(a)(c), all divided by 2(a).

[Tracie Lynn]

The best method of solving a quadratic. When your equation is in the standard form of ax² bx c = 0, x = (-b ± √b² - 4ac) / 2a. It is far superior to both [factoring] and [completing the square]. The equation may look difficult, but all you have to do is plug in the [coefficients] and simplify!