This is the formula for quadratic equation. This equation is only for one variable with second degree of order. The general form of quadratic equation is ax2+ bx + c =0. For a derivation reason we arrived what is in the photos above.This is used usually if factoring seems so not a perfect square to get the value of x.
Sample graph of a quadratic equation:
1. A graph of single quadratic equation.
2. A graph of double quadratic equation.
3. A graph of multiple quadratic equation.
These are the illustrations of different graphs of quadratic equation looks like in different form of quadratic equation, may it be single, double or multiple.



