Day 10: Factoring Goal: To factor quadratic trinomials of the form x 2 + bx + c Standard: 9.2.3.3 – Factor common monomial factors from polynomials, factor.

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Day 10: Factoring Goal: To factor quadratic trinomials of the form x 2 + bx + c Standard: – Factor common monomial factors from polynomials, factor quadratic polynomials, and factor the difference of two squares. Guiding Question: How does FOIL help me factor trinomials? Materials: Pencil, Folder, Student Packet 1

Solve the proportion: Find 10%, 20%, 50% and 100%: A) 30 B) 41 Percent Problems: A)15 is what percent of 80? B)What is 9% of 72? Reflection Starters: “I know……” or “I need to work on……” Math Review Day 10 QUIZ 2

Access: A)What two numbers add or subtract to 6 and multiply to 8? B) What two numbers add or subtract to -1 and multiply to 42? C) What two numbers add or subtract to 5 and multiply to -6? D) What two numbers add or subtract to 14 and multiply to 24? 3

Factor: A)x 2 + 6x + 5 B) x 2 + 6x + 9 C)x 2 - 8x + 15 Try: D) x 2 + 8x + 12 E) x 2 - 5x + 6 F) x x

G) x 2 + x -20 H) x 2 - 3x - 18 I) x 2 + 7x - 18 Try: J) x 2 + 2x - 15 K) x 2 - 6x + 8 L) x 2 - 8x - 20 How would you know if the trinomial is not factored correctly? 5

Work Time: Work through page 27 in your packet Exit Slip at: _________ 6

Exit Slip: (on a half-sheet of scratch paper) NM: Explain in your own words how to factor x 2 + 9x Show how to check your answer. Factor: A)x x + 30 B) x x + 9 C) x 2 - 6x -27 D) x x – 32 Make sure your name is on it, and turn it in! 7