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FACTORING BINOMIALS. Factoring Binomials (4 Possibilities). • GCF (Greatest Common Factor) • Difference of Squares •Sum or Difference of Cubes • Prime (Not Factorable). If a GCF exists, simply factor it out.
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Factoring Binomials(4 Possibilities) • GCF (Greatest Common Factor) • Difference of Squares •Sum or Difference of Cubes • Prime (Not Factorable)
2nd PossibilityDIFFERENCE OF 2 SQUARESIf both terms in the binomial are squares and they are subtracted, a Simple Formula will give you the answer.
Example 1) The Difference of Squares Formula is Find a and b, then plug them into the formula.
Recognizing Monomial Squares Numbers that are perfect squares are: 1, 4, 9, 16, 25, 36… Variables that are perfect squares are: (Any even powered variable is a perfect square) Monomials that are perfect squares are: 2x2 Check this picture out. It shows why any even powered Variable is a perfect square. 2x2 4x4
3nd PossibilitySUM or DIFFERENCE OF 2 CUBES If both binomials are cubes and they are added
If both binomials are cubes and they are subtracted To solve sum and difference of two cubes, simply solve for a and b. Then plug into the correct formula.
1. Factor completely a b a = 3x b = 5 2. Factor completely GCF FIRST! a = x b = 4
4th and last possibility when trying to factor a binomial If the binomial does not have a GCF & is not a Diff. Of Squares , Diff. of Cubes, or Sum of Cubes PRIME & NOT FACTORABLE