The quadratic formula is used all the time to solve quadratic equations, often when the factors are fractions or decimals but sometimes as the first choice of solving method. The quadratic formula is sometimes faster than completing the square or any other factoring methods.
Quadratic formula find:
-x-intercept
-where the parabola cross the x-axis
-roots
-solutions
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A quadratic equation.
The quadratic formula can be derived by used a method called completing the square. It's like using algebra to solve for x. The process is explained the related link "Derivation of Quadratic Formula".
This formula is called the quadratic formula.
To find the solutions of x in a quadratic equation.
The quadratic formula is derived by completing the square. That is as much as I can tell you.