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In the elimination method, we subtract the linear equation and the quadratic equation to eliminate the variable ‘y’ and we will write the like terms on one side. Below are ten (10) practice problems regarding the quadratic formula. The more you use the formula to solve quadratic equations, the more you become expert at it! Our editors will review what you’ve submitted and determine whether to revise the article. Here, D = b2 8211 4ac is called the discriminant of the quadratic equation, and based on this, we can define the nature of the roots of a quadratic equation. This is a quadratic equation rewrite it in standard form. When we solved quadratic equations in the last section by completing the square, we took the same steps every time. By the end of the exercise set, you may have been wondering lsquoisnrsquot there an easier way to do this?rsquo The answer is lsquoyesrsquo. Mathematicians look for patterns when they do things over and over in order to make their work easier. In this section we will derive and use a formula to find the solution of a quadratic equation.
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