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What is the Quadratic Formula?

You can’t overcome several quadratic problems by factoring. It is usually so where the roots are not rational numbers or answers. Another way is the Completing Square method, but the lengthy procedure makes it an unpopular approach to solve quadratic equations. The third way to solve quadratic equations includes using the formula below:

ax 2 + bx + c = 0, the quadratic equation written in its general form where a, b, c are coefficients of the equation. In the general form of a quadratic equation, x is an undefined vector; a is considered a quadratic coefficient, b a linear coefficient, and c a constant. The numerals a, b, and c are equation coefficients, which are known quantities. A can’t be 0, for example. Otherwise, the equation will be linear rather than quadratic.

Looking from the perspective of Coordinate Geometry, a quadratic equation takes the form of a Parabola. The quadratic formula allows you to solve quadratic problems and is possibly one of the best five mathematical formulas. There are many methods to solve a

Quadratic equation, including factoring, using the quadratic formula, completing the square, or graphing.

Remember that the quadratic rule also has multiple uses in the physical universe, such as field equations, projectile trajectories, and distance. You will have to be mindful of three possibilities while implementing the quadratic rule. A part of the formula called the discriminant defines the three possibilities.

A quadratic function as coefficients of real numbers may have the following:

The Discovery of the Quadratic Formula

Before discovering the Quadratic Formula, the Greek Mathematicians used geometric ways to find the quadratic equations. Later, the quadratic formula was found by an Indian Mathematician, but he had represented it in words and not in symbols. A Persian Mathematician had then represented this in the form of symbols. We are well familiar with it.

Derivation

Wondering how the formula is derived? Well, here we go:

x2 + bx + c = (x — h)2 + k

General Thoughts

Now with technology advancing at a breakneck pace, we have a calculator for everything. All we have to do is go online and search for it. There are several quadratic formula solver calculators available online. One such calculator is the quadratic formula calculator by CalculatorSoup. CalculatorSoup has a ready-made programmed calculator. All a person has to do is enter the values of a, b, c, and it substitutes them into the general formula of a quadratic equation.

This online calculator is a quadratic equation solver that uses the quadratic method to solve a second-order polynomial equation like ax2 + bx + c = 0 for x, where a ≠ 0, using the quadratic formula. The calculator approach will demonstrate the function to solve the entered equation for simple and complex roots using the quadratic formulation. The calculator calculates if the discriminant (b2−4ac) is less than, greater than, or equal to 0.

You will have the equation structured in the form “(quadratic)=0” for the Quadratic Formula to function. Interestingly, the Formula denominator “2a” is under all of the above, not just the square root. And there’s a “2a” beneath, not only a basic “2.” Be sure you’re cautious not

To lose the square root or the “plus/minus” in the center of your equations, or I can bet you’ll fail to “fill them back” on your study, and you’ll screw up. Recall that “b2” implies “ALL square of b, including its symbol,” so don’t mark b2 as negative, even though b is negative since a negative square is a plus.

Remember, though, that the view of the graph by the calculator would include any pixel-related round-off mistake, and you should test and see if the measured and graphed values are relatively close; don’t assume an exact fit.

In a way, the calculator can be a boon and a bane. The advantage would be that all the work needed to solve the equations is reprieved off us. But what we tend to overlook is that due to these types of calculators is that all that happens is that we become lazy and complacent. Tentatively, if a person needs to solve an advanced equation and not exclusively find the answer for a particular quadratic equation, it is understandable. But to solve a quadratic equation, only using this calculator will not help us in a way shortly. Even though the internet is available mostly throughout, humans should not tend to depend too much on technology and machines.

Hence, I would like to explain how the quadratic formula works in a step by step process on paper:

So, in conclusion, learning the importance of formula is necessary. Using the calculator helps solve complex equations, but as far as simple quadratic equations go, it is suggested to explain them on paper through the proper method. It is stunning to see calculators so advanced. But all I can say is don’t get carried away by these extraordinary advancements in the technology sector and sometimes ‘Old is Gold.’

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Originally published at https://www.oddylabs.com on December 25, 2020.