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Mastering Binomials: Lesson 8.7 and Assignment

Welcome back! Today's agenda focuses on binomials as we warm up, correct Homework 8.6, and take the quiz. We’ll delve into new notes for Lesson 8.7, where you will learn how to multiply binomials using both the FOIL method and the Box Method. Remember to stay in your assigned seats and treat school property with respect. After the lesson, you’ll complete the 8.7A Worksheet, demonstrating your understanding of multiplying binomials. Be sure to show your work!

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Mastering Binomials: Lesson 8.7 and Assignment

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  1. Welcome back!

  2. Today’s agenda • It’s a Mystery • Warm-up • Correct 8.6 HW • 8.6 HW Quiz • 8.7A Notes • Assignment: 8.7A Worksheet

  3. Where in the world are the desk feet??? *Stay seated today . . . and maybe for awhile. *You cannot move seats and must be in your assigned seat until the bell rings. *Destruction of school property & stealing are charges when you take the feet (bottom of the chairs) off. *STOP!

  4. Warm-up 1) 2)

  5. Answers to 8.6 HW 4a2 + 3a 2) 2y2 – 8y 3) 12h2 – 20h 4) –4b + 36b2 + 8b3 24y2 – 30 6) 35c – 14c3 + 7c4 7) 15x3+ 3x2 + 12x 8) –6n4 +9n2 + 12n2 10x4y – 35x3y2 – 5x2y2 10) 10a2 + 4a + 5b – 11 –4a2 – 4a + 5b + 7 12) –35x4y3z –343a6b3c12 14)

  6. I CAN . . . ~multiply binomials. Lesson 8.7

  7. Example #1: 9 (x + 9) (3x + 7) x Write final answer looking at the box diagonally! 3x 7 Combine like terms! Do NOT add the exponents! 7x 3x2 27x 63 3x2 + 34x + 63

  8. Example #2: 5x – 3y 2y –4x (–4x + 2y) (5x – 3y) –20x2 12xy 10xy –6y2 –6y2 –20x2 + 22xy

  9. Your turn: 6x 6x (6x+ 8) (6x– 8) 8 – 8 36x2 –48x 48x –64 – 64 36x2

  10. USING FOIL F O I L = FIRST = OUTER = INNER = LAST

  11. EXAMPLE #3: First Outer Inner Last x2 + 10x + 40 + 4x + 40 x2 + 14x

  12. EXAMPLE #4: First Outer Inner Last + 55 + 5x 2x2 + 22x + 55 2x2 + 27x

  13. Are you a master?? Multiply using the method of YOUR CHOICE. Box Method or FOIL.

  14. Today’s assignment 8.7A Worksheet SHOW WORK!

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