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The roots of any quadratic equation can be found by either method. Which of the two you use may depend on nothing more than your preferences (or exam instructions!). There is never a need to use both methods since if you have used one you have the answer so why bother with the other.

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Q: Is there a math problem that can be solved by completing the square AND the quadratic formula?
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Related questions

Who found the quadratic formula?

It comes from completing the square of a general quadratic. Many people believe Brahmagupta first solved this in 628 AD.


What does it mean in algebra to complete the square?

A quadratic equation can be solved by completing the square which gives more information about the properties of the parabola than with the quadratic equation formula.


Can all quadratics be solved by completing the square?

Completing the square is one method for solving a quadratic equation. A quadratic equation can also be solved by factoring, using the square roots or quadratic formula. Solving quadratic equations by completing the square will always work when solving quadratic equations-You can also use division or even simply take a GCF, set the quantities( ) equal to zero, and subtract or add to solve for the variable


What is the quadratic formula for?

The quadratic formula is used to solve the quadratic equation. Many equations in which the variable is squared can be written as a quadratic equation, and then solved with the quadratic formula.


What part of the a quadratic formula tells you when the quadratic equation can be solved by factoring?

The discriminant


What is the third step in solving this equation by completing the square?

Completing the square is one method for solving a quadratic equation. A quadratic equation can also be solved by several methods including factoring, graphing, using the square roots or the quadratic formula. Completing the square will always work when solving quadratic equations and is a good tool to have. Solving a quadratic equation by completing the square is used in a lot of word problems.I want you to follow the related link that explains the concept of completing the square clearly and gives some examples. that video is from brightstorm.


What does quadratic formula find?

When an equation cannot be solved for "x" to find the zeroes, the quadratic formula can be used instead for the same purpose.


What is equadtratic equation?

A quadratic equation normally has 2 solutions and can be solved by using the quadratic equation formula.


Can 5x2 plus 2x-4 equals 2x2 be solved using the quadratic formula?

Yes


Can anyone help with this problem solve Quadratic problem 3x2 4X -2 0?

If you mean 3x2+4x-2 = 0 then it can be solved by means of the quadratic equation formulla


Can Quadratic equations that can be solved using the quadratic formula also be solved by factoring?

Yes, however not all quadratic equations can easily be solved by factoring, sometimes you can factor and sometimes it is easier to use the quadratic formula. Example: x2 + 4x + 4 This can be easily factored to (x + 2)(x +2) Therefore the answer is -2 by setting x +2 = 0 and solving for x This can be done using the quadratic equation and you would get the same results, however, it was much faster to factor instead.


Which equations could be solved using the quadratic formula?

Type your answer here...5x2 - 3x + 10 = 2x2x2 - 6x - 7 = 2x