How to Use Equation Solver?

Mathematical equations are those equations with an equal sign in between them. The equations are categorized into linear equations, which could consist of one, two or three variables, radical equations, exponential equations and quadratic equations.

What is an equation solver?

An equation solver is basically the formula to use in order to solve an equation. The formula can be, complete square method, factoring, quadratic formula. Most of them are used to solve quadratic equations.

The complete square method is appropriate to use especially when the factoring a quadratic equation does not work. It can also be applicable when finding irrational and complex roots.

How it work:

Take the equation to be  

On the other hand, quadratic formula is best used to solve a quadratic equation when neither complete square method nor factoring method produces the right results or is hard to use in certain equations. It can also be used by someone who is in a hurry but also knows how to use the formula.

The formula looks like this: 

X, in this case, will represent the variable we are looking for while the other letters a, be and c are random numbers. They are used as numerical coefficients of any given quadratic equation.

An example of a quadratic equation resembles the equation below.

 A linear equation can have one variable like 4x+10= 6 

Or two variables like the equation below 6y+5y= 12

Or even three variables like equation below. 2x+5y-9z

Solving practical example

Let us take a practical look at how to solve an equation using any the mentioned methods.

Our quadratic equation will be.  

We will use the quadratic formula as our equation solver in our case.

Since we know that

Then solving the equation will not be that difficult. As usual, we will substitute letters a, b and c in the formula with the values 1, 3 and -9. The equation will change to be 

After doing the calculations and doing it correctly, the values for x here should be 1.854 and -4.855. If your answer is different from mine, you need to double check your steps again. Chances are, you missed a step, or you forgot to input a certain value or may have substituted the values for a, b and c wrongly. Do that, and I am sure you will land on an answer that is same to mine.

Did I forget to mention that if you do not know how to use any of the formulas, I touched on at the top of this article where you can get help? I think I did. Let me tell you where you can go and learn all what I have mentioned here. The site is www.quickmath.com. It is really helpful most to those who did not understand what their math teacher or lecturer, depending on your level of education, taught. You may have missed a math class too. The best you can do to catch up with the rest of the class is to visit this site and start learning.

Main Uses of Online Calculators

Many online calculators are available that can be used for various purposes like subtracting fractions, solving equations, complex numbers, simplifying expressions, matrices, sequences, functions, statistics, logarithms, generating graphs, trigonometry and many more. When you are using the calculator to solve a problem like solving equations, it will be very easy because the calculator itself will do all the steps like factorization, subtracting fractions, calculating mixed fractions, roots, long division, radicals, etc. 

Even if you want to find the GCF and LCM of any number, all that you have to do is select the appropriate screen and type in the number. The answer will be displayed immediately. For each problem, the step by step calculation like addition, subtraction, multiplication and division will be done and it will be displayed on the screen. Arithmetic calculations for large numbers can be done and it will be easy to plot the graphs for equations of lines, circles, parabolas, hyperbolas, ellipses, equations and inequality solutions.

Subtracting Fractions

If a middle school student wants check the answers for this algebra homework, all that he has to do is open the software and type in the equation. The software will simplify it and solve for value of X. The log values for different numbers can be found and some of the basic geometry functions like calculation of right angle triangles can be done. There are many complicated subjects like statistics and trigonometry in math which will be tough to understand at first. But if you could understand the basic concepts of these subjects, you could solve any problem. 

When you use the online calculators for solving problems in statistics, you could get values for mean, standard deviation, range, mode and many other such functions. The calculations involved in linear algebra like addition, subtraction, multiplication, subtracting fractions, division of matrices can be done. As the process of finding the inverse of a matrix will involve a lot of steps, you could use these calculators to do all the work and then cross check.

The entire process will be explained on the screen so that you can go through the steps and understand the concepts properly. When you have to solve a system with two or three linear equations, then you might have to use some concepts like Cramer’s rule. If you are not familiar with the concept, then you will be stuck. But if you use the calculator for this purpose, then the rule will be displayed along with the theory behind it. You can use the example problems and tutorial sessions to get a better understanding of such complex concepts. 

All the basic concepts involved in solving the problem will be provided and an explanation for each concept is available so that you will not have to search for it anywhere else. Once you get the answer for your problem, you could export it in a format that can be opened on any browser. This can be shared among your friends so that you can collaborate on what is the best way for solving each problem is.