# Special factoring strategies.pptx - Factoring Difference of...

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Factoring Difference of Squares
Factoring Difference of Squares: Factor out completely using GCFFactor 18x^2-98y^2Step 1:Decide if the terms have anything in common or GCF. If so, factor out the GCF. Do not forget to include the GCF as part of your final answer. In this case, the two terms have a 2 in common, which leaves: 2(9x^2-49y^2)Step 2: To factor this problem into the form (a + b)(a – b), you need to determine what squares will equal 9x2and what squared will equal 49y2. In this case the choices are 3x and 7y because (3x)(3x) = 9x2and (7y)(7y) = 49y2. = 2(3x+7y)(3x-7y)Step 3: Determine if any of the remaining factors can be factored further. In this case they can not so the final answer is the same as above:2(3x+7y)(3x-7y)
Factoring Sum of Cubes
Factoring Sum of Cubes: x^3+64Step 1: Decide if the two terms have anything in common, or GCF. If so, factor out the GCF. Do not
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