2.3 Quadratic Equations

Alright everybody, so when working those quadratic equations there are several big things to remember.
Number 1: The Game
Second, is the Zero Factor Theorum.
This states that if p and q are algebraic expressions, then p=q if and only if p=0 or q=0.
Another important thing to know when solving them quadratic equations is completing the square.
This means that when:

We add to both sides to give us... the perfect square.
The example given to us by Mr. Wilhelm himself was:






Also, when solving quadratic equations, always keep in mind that if that means that . The key here is that it can be negative or positive.
Now last but not least is the Quadratic Formula.
If a is not zero, then...
x=(-b±√(b^2-4ac))/2a
This will give us two solutions of the equation. Be sure to check these people.
Now for your enjoyment...




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