The root formula generally refers to the root formula obtained by programming a quadratic (or multiple) equation with one variable. Like the unary quadratic equation ax? The root formula of +bx+c = 0 is x = [(-b) √ (b? -4ac)] / 2a .
Quadratic equation is an ancient mathematical formula, and its history can be traced back to the Babylonians in 2000 BC. It was originally used to calculate problems involving possible changes in the length of rectangles. It is a "polynomial equation", which means that it always has two effective solutions.
In the typical quadratic equation X 2-BX+C = 0, students will try to find two different solutions of X according to the rule of thumb: the value of B should be equal to the sum of two different solutions, and C is equal to the product of two solutions.
This rule gives students a general framework. At present, most students use guessing method to solve problems. In this method, they make an informed guess about the range in which the answer may fall, and then calculate whether their guess is really valid.
Now, a professor at Carnegie Mellon University brings good news to students who are studying algebra all over the world. He provided a simpler and more effective method to solve problems involving quadratic equations.
This new method was inadvertently discovered by Dr. Boshen Luo while instructing junior high school students who participated in the American Mathematical Olympiad to write some questions involving quadratic equations. His method includes applying a much simpler equation to solve a variable in a quadratic equation without having to calculate the whole equation, which is usually very complicated.