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The thing that I learned this week are Solving Quadratic Equations by Factoring, Using Square Roots to Solve Quadratic Equations and Developing and Applying the Quadratic Formula.、
x^2-2x-8=0 contains a quadratic or second degree term, a term with a variable that is squared and no higher degree term, such an equation is called a quadratic equation.
That is, if ab=0, then a = 0 or b = 0 or a = b = 0.
This is called the zero product property.
When the Discriminant (b2−4ac) is:
- positive, there are 2 real solutions
- zero, there is one real solution
- negative, there are 2 complex solutions
How to solve it:
We can Factor the Quadratic
Or we can Complete the Square
Or we can use the special Quadratic Formula