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Warm-Up → Copy the example problem for “Factoring Completely” and then attempt the “Got It” question. This will go in your notes
Homework Check
“Factor Completely”2/22/2017
Factoring Trinomials in the form x2+ax+b
2/22/2017
Factoring Trinomials in the form x2+ax+b
(x + 3)(x + 7)
(x + 3)(x + 7) = x2 + (7 + 3)x + 3 7 = x2 + 10x + 21
● The coefficient of the x2 term is 1● The coefficient of the x term is the sum of the numbers for b and c● The constant term c, is the product of the b and c
sum
product binomialsproduct binomials
product c
Practice: r2 + 11r + 24
Practice: y2 - 6y + 8
Your turn:A rectangle's area is x2 - x - 72. What are possible dimensionsof the rectangle? Use factoring.
Homework 8.5 worksheet (online)13 - 21 odd31-41 odd42, 43, 50
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