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Unformatted text preview: The textbook exclusively uses the trialanderror method. Most students have greater success if they sometimes use the product/sum method. Ex 1 : Factor each completely. 2 2 2 ) 9 68 32 ) 10 17 6 a y y b x xy y=+ = 2 2 2 4 3 2 2 ) 6 47 35 ) 6 11 35 ) 81 72 16 c m mn n d w w w e r r+== + + When given a polynomial to factor, this is the order you should follow. 1. Always look for a GCF first. 2. If the polynomial has two terms (binomial), see if it is a difference of squares. 3. If the polynomial has 4 terms, try the grouping method. 4. If the polynomial has 3 terms (trinomial), see if it is a perfect square trinomial. 5. If a trinomial is not a perfect square, try ‘trialanderror’ or the ‘grouping’ method. Ex 3: Factor each polynomial completely, if possible. 3 2 5 ) 3 4 12 ) 3 48 a a a a b n n +3 2 ) 4 32 64 c r r r+ 3 6 4 2 3 2 3 2 ) 4 12 ) 2 32 16 ) 5 6 d n n n e x x x g g g g+4 3 2 ) 12 9 30 h x x x...
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 Fall '09
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 Algebra, Coefficient, Square number, 5g

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