Before even diving into any calculations, we need to know what a quadratic formula is. It is a formula one of the formulas that is being used to solve a quadratic equation. This formula always comes in handy where other formulas like factoring, completing the square method, or graphing may not really yield the expected results. It is the best and the most convenient way of solving quadratic equations. This formula was derived by Pythagoras and Euclid. They are world famous mathematicians of all time.
So, how does quadratic formula looks like?
If you have ever come across something like this:
Then you may or may not have known that this is a quadratic equation. This formula is normally derived from the equation
So, “x” is obviously the variable we are trying to solve, while a, b and c are just mere numbers. Actually, they are the numerical coefficient of the quadratic equation you have been given to solve.
Like for example:
Here, the value of a will be equal to 3, while that of b will be equal to 10, and c will have a value equals to 8.
If you do not know how to solve this equation or you would like to know more on how to derive the quadratic formula, quickmath.com has a better way of helping you in understanding it. It has so many examples that you can choose to follow or ignore them if you want. But, I bet you will be the best mathematician after going through their step by step examples and doing some of the exercises that you may come across along the way.
Want to try solving an equation using quadratic formula?
We don’t have to look for some quadratic equations online. We can just use the one above.
So we know that quadratic formula isTherefore, we will just substitute the values of the given equations here but appropriately. We will end up with something like this
This should be
Therefore x = - 2 or x = - 1.333
If you substitute the x, in the quadratic equation, with -2 or -1.333 you will find that the final values at Right Hand Side and Left Hand Side will be equal. With this, you can use comfortable brag to your friends that you a good mathematician and that you can solve almost any quadratic equation that crisscrosses your path during exams.
For you not to forget the formula and how it works, make sure you keep practicing it almost on a daily basis. Go through many sample equations, exercises and also past papers. If you do not do this, you may end up going back to square one. If that happens, you can always redeem yourself from the website qucikmath.com.
Wish all the best in your online math classes, and good luck in your exams or Continuous Assessment Tests or any term paper you have been given by your tutor or lecturer or teacher.