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Wednesday, October 23, 2013

Special Products - Factoring, 12

Category: Algebra

"Published in Suisun City, California, USA"

 Find the factors for


Solution:

Consider the given equation above


The given equation is also a trinomial where (x + y) is considered as a single variable. It is not a perfect trinomial square because the first and last terms are not perfect square. We can check the above equation using discriminant if it can be factored or not as follows


where a, b, and c are the coefficients of a trinomial. Now, let's check the given equation as follows  






Since the value of discriminant is a whole number, then the given equation can be factored. Next, we have to think the factors of the last term so that we add the two factors, it will be the same as the middle term. The possible factors of the last term are 1, 2, -1 and -2. If the middle term is -3, then the factors must be -1 and -2. When you add -1 and -2, it will give us -3. Therefore, the factors of the above equation are