USING THE FORMULA (SOLVING QUADRATICS) Slideshow 18, Mathematics Mr Richard Sasaki, Room 307.

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Presentation transcript:

USING THE FORMULA (SOLVING QUADRATICS) Slideshow 18, Mathematics Mr Richard Sasaki, Room 307

Objectives

The Quadratic Formula

Proof – You don’t need to learn this!

The Formula So, the formula is…

Examples Here, a = 3, b = 4 and c = 1. Let’s substitute these into the formula.

Examples Here, a = 1, b = 2 and c = -3. Let’s substitute these into the formula. Try the worksheets!

Answers - Easy -2, 1 -1, 2 / 5 Because we would have to square root a negative number. (Can’t do that).

Answers - Medium Because we would need to divide by 0. (You cannot divide by 0.)

Answers - Hard