How to Prove quadratic formula?
Many ib mathematics tutors consider quadratic equations as one of the most important topics of ib maths. There are following ways to solve a quadratic equation
► Factorization method
►complete square method
► graphical method
► Quadratic formula method
The quadratic formula is the strongest method to solve a quadratic equation. In this article, I will use …… steps to prove the quadratic formula
Given equation: ax²+bx+c=0
Step-1: transfer constant term to right side
Step-2: divide both sides by coefficient of x²
if a, b and c are all rational numbers and one root of the quadratic equation is a+√b then the second root will automatically become a-√b. that can be understood easily as we use one +ve and one -ve sign in quadratic formula.
These types of roots are called Conjugate Roots.