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Unformatted text preview: the equation. We guarantee that this term
will be present in the equation by requiring a ¹ 0 . Note however, that it is okay if b and/or c are
zero.
There are many ways to solve quadratic equations. We will look at four of them over the course
of the next two sections. The first two methods won’t always work, yet are probably a little
simpler to use when they work. This section will cover these two methods. The last two methods
will always work, but often require a little more work or attention to get correct. We will cover
these methods in the next section.
So, let’s get started.
Solving by Factoring
As the heading suggests we will be solving quadratic equations here by factoring them. To do
this we will need the following fact. If ab = 0 then either a = 0 and/or b = 0
This fact is called the zero factor property or zero factor principle. All the fact says is that if a
product of two terms is zero then at least one of the terms had to be zero to start off with.
Notice that this fact will ONLY wor...
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This note was uploaded on 06/06/2012 for the course ICT 4 taught by Professor Mrvinh during the Spring '12 term at Hanoi University of Technology.
 Spring '12
 MrVinh

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