Quadratic formulaSOME EXAMPLES….

Write this down…

When you have a quadratic in the form , you can find the solutions (roots or zeros) by using the quadratic formula.

Only replace a, b and c with numbers!

No x’s.

Examples…

The first one is easy…

Hint, list out a=___, b=___ and c=___. Remember they are numbers, no variables allowed.

This one has two real solutions that are rational.

Did you get it? Here is the next one…

Hint: First, get it to say =0, then list a=___, b=___ and c=____

This one had 2 real solutions. They are irrational because the number of the radical is not a perfect square.

Last one…

Hint: get it in standard form ( 1st.

You only have one solution on this one andIt is rational. If the number under the Radical is zero, you will only have one solution.