How To Solve Quadratic Equations By Factoring
Any quadratic equation can be written as and if factoring the left hand side is possible, we can write the equation as
for some
and
. We can view the last equation as having two numbers that multiply to zero. The only one to have that is if at least one of them is zero (if both of them are not zero then the product is not zero). Thus
or
. From these we can easily solve for
.
These videos will explain to you using a concrete example how to do all of these. If you need to practice your factoring skill, check out this videos first.
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