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Special Products - Factoring, 27

__Category__: Algebra

"Published in Newark, California, USA"

Find the factors for
__Solution__:
Consider the given equation above
Did you notice that the given equation is a quadratic equation of variables (x - 9b) and y? (x - 9b) is considered as a single variable. We have to do the trial and error method in getting the factors of (x - 9b)² and -2y² so that the middle term must be -(x - 9b)y. Let's start the factoring of the given equation as follows
The middle term is
Since
the value of the above calculation is the same as the middle term of
the given equation which is -y(x - 9b), then the factors of the given equation
are