Solving quadratic equations
Solving quadratic equations is quite an important skill in mathematics. Many situations in life can be modeled
with quadratic equations
The goal of this lesson is to familiarize you with the numbers of ways that are used to solve quadratic equations. Usually this involves factoring the equation first.
The most important technique used to factor quadratic equations is by factoring
Before starting this unit, it is very important to study, review, or know what
Solving quadratic equations by factoring
This technique shows you how to solve equations of the form ax
+ bx + c = 0, when a = 1 or more
When a = 1, it is quite straightforward!
When a is equal to 1, it is somewhat tedious. You will need to do trial and error
Solve by completing the square
This technique shows you how to complete the square to solve quadratic equations
Pay close attention to all steps and learn it well!
Proof of the quadratic formula
is entirely based on this technique
Make sure you understand it, or you may struggle a lot to understand the proof of the quadratic formula
Solve using the quadratic formula
Technique #1 has limitations when solving quadratic equations. When answers are not integers, but real numbers, it is very hard or nearly impossible to find the solutions.
With this formula, you can solve any quadratic equations and it does not matter how complex the equation is or how weird the answer will be.
Have Some Great Quadratic equation problems?
Do you have some great quadratic equations problems? Share them here with the solutions!
Feb 17, 19 12:04 PM
There is no rational number whose square is 2. An easy to follow proof by contraction.
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