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**Unformatted text preview: **. It puts the trinomial back as the product of two binomials. Form: c bx x + + 2 Always write terms in descending order! Notice: 15 2 15 3 5 ) 5 )( 3 ( 2 2-+ =--+ = +-x x x x x x x-15 is the product of -3 and 5 2 is the sum of -3 and 5 If a trinomial is of the form c bx x + + 2 , find a pair of numbers r and s ; such that the product ( r )( s ) equals c and the sum r + s equals b . Then the factors are ) )( ( s x r x + + . You must watch signs!!! Factor the following. 1) 5 6 2 + + x x Find a pair of numbers with a product of 5 and a sum of 6. 2) 50 20 2 2 +-a a Notice you can take out a GCF of 2 first. ) 25 10 ( 2 2 +-= a a Now, find a pair of numbers with a product of 25 and a sum of -10. 3) a a a 72 2 3--4) 10 3 2-+ x x 5) 2 56 x x-+ Hint: Factor out a GCF of -1 first....

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