Quadratic Equation

Quadratic Equation The equation has x as a variable and the general form is ������������2 + ������������ + ������ = 0 where a, b, c Is a constant and a ≠ 0 is called the quadratic equation for one variable About the quadratic equation for one variable The essence of this story Is to solve the quadratic equation for one variable Solving quadratic equations in a single variable is not difficult but must be practiced frequently. Do a lot of problems Which solving the quadratic equation for one variable to find the answer to that equation There are many ways, such as substituting various numbers into variables and see if the equation is true. If true, then the number we represent is the answer to the quadratic equation for one variable But this method is not popular It's difficult. This method No one would be sitting in place of the number in the variable. The method that is commonly used is 1. Factor separation 2. Pulling the joint 3. Use the difference squared





Substitute x into the equation